diff --git a/NAMESPACE b/NAMESPACE
index b8b257dad..eddb3b86d 100644
--- a/NAMESPACE
+++ b/NAMESPACE
@@ -323,6 +323,7 @@ export(assertRxUiPrediction)
 export(assertRxUiRandomOnIdOnly)
 export(assertRxUiSingleEndpoint)
 export(assertRxUiTransformNormal)
+export(assertRxUnbounded)
 export(assertVariableExists)
 export(assertVariableName)
 export(assertVariableNew)
@@ -571,10 +572,12 @@ export(swapMatListWithCube)
 export(testCompartmentExists)
 export(testExists)
 export(testRxLinCmt)
+export(testRxUnbounded)
 export(testVariableExists)
 export(toTrialDuration)
 export(uppergamma)
 export(waiver)
+export(warnRxBounded)
 export(write.template.server)
 export(write.template.ui)
 export(xlab)
diff --git a/R/assert.R b/R/assert.R
index 7a4dce949..63aa5f6ba 100644
--- a/R/assert.R
+++ b/R/assert.R
@@ -552,8 +552,8 @@ testExists <- function(ui, x) {
                    return(is.finite(.t$upper) || is.finite(.t$lower))
                  }
                  .err <- .errDistArgRanges[[.t$err]]
-                 return (!identical(.t$upper, .err[1]) ||
-                           !identical(.t$lower, .err[2]))
+                 return (!identical(.t$lower, .err[1]) ||
+                           !identical(.t$upper, .err[2]))
                }, logical(1), USE.NAMES=FALSE), .theta$name)
 }
 #' Test if the rxode2 model has any parameters with user defined boundaries
@@ -569,13 +569,9 @@ testExists <- function(ui, x) {
 #'
 #' one.cmt <- function() {
 #'   ini({
-#'     ## You may label each parameter with a comment
-#'     tka <- 0.45 # Log Ka
-#'     tcl <- log(c(0, 2.7, 100)) # Log Cl
-#'     ## This works with interactive models
-#'     ## You may also label the preceding line with label("label text")
-#'     tv <- 3.45; label("log V")
-#'     ## the label("Label name") works with all models
+#'     tka <- 0.45; label("Ka")
+#'     tcl <- log(c(0, 2.7, 100)); label("Cl")
+#'     tv <- 3.45; label("V")
 #'     eta.ka ~ 0.6
 #'     eta.cl ~ 0.3
 #'     eta.v ~ 0.1
@@ -587,28 +583,27 @@ testExists <- function(ui, x) {
 #'     v <- exp(tv + eta.v)
 #'     linCmt() ~ add(add.sd)
 #'   })
-#  }
-#'
-#' testRxBounded(one.cmt)
+#' }
 #'
-#' try(assertRxBounded(one.cmt))
+#' testRxUnbounded(one.cmt)
 #'
-#' warnAssertRxBounded(one.cmt)
+#' try(assertRxUnbounded(one.cmt))
 #'
-testRxBounded <- function(ui) {
-  any(.getRxBounded(ui))
+#' warnRxBounded(one.cmt)
+testRxUnbounded <- function(ui) {
+  !any(.getRxBounded(ui))
 }
 
-#' @describeIn testRxBounded Assert that the rxode2 model has any parameters with user defined boundaries
+#' @describeIn testRxUnbounded Assert that the rxode2 model has any parameters with user defined boundaries
 #' @export
-assertRxBounded <- function(ui, extra="", .var.name=.vname(ui)) {
-  if (testRxBounded(ui,extra=extra, .var.name=.var.name)) {
+assertRxUnbounded <- function(ui, extra="", .var.name=.vname(ui)) {
+  if (testRxUnbounded(ui)) {
     return(invisible(ui))
   }
   stop("'", .var.name, "' can not have user defined boundaries", extra, call.=FALSE)
 }
 
-#' @describeIn testRxBounded Warn that the rxode2 model has any parameters with user defined boundaries
+#' @describeIn testRxUnbounded Warn that the rxode2 model has any parameters with user defined boundaries
 #' @export
 warnRxBounded <- function(ui, extra="", .var.name=.vname(ui)) {
   .bound <- .getRxBounded(ui, extra=extra, .var.name=.var.name)
diff --git a/man/assertCompartmentExists.Rd b/man/assertCompartmentExists.Rd
index e7e1169ab..2b570facb 100644
--- a/man/assertCompartmentExists.Rd
+++ b/man/assertCompartmentExists.Rd
@@ -32,7 +32,8 @@ Other Assertions:
 \code{\link{assertCompartmentNew}()},
 \code{\link{assertRxUi}()},
 \code{\link{assertVariableExists}()},
-\code{\link{assertVariableNew}()}
+\code{\link{assertVariableNew}()},
+\code{\link{testRxUnbounded}()}
 }
 \author{
 Matthew Fidler & Bill Denney
diff --git a/man/assertCompartmentName.Rd b/man/assertCompartmentName.Rd
index 07f189c39..d6e121f73 100644
--- a/man/assertCompartmentName.Rd
+++ b/man/assertCompartmentName.Rd
@@ -48,7 +48,8 @@ Other Assertions:
 \code{\link{assertCompartmentNew}()},
 \code{\link{assertRxUi}()},
 \code{\link{assertVariableExists}()},
-\code{\link{assertVariableNew}()}
+\code{\link{assertVariableNew}()},
+\code{\link{testRxUnbounded}()}
 }
 \author{
 Bill Denney
diff --git a/man/assertCompartmentNew.Rd b/man/assertCompartmentNew.Rd
index 4ef97fb3b..e62fa9703 100644
--- a/man/assertCompartmentNew.Rd
+++ b/man/assertCompartmentNew.Rd
@@ -23,7 +23,8 @@ Other Assertions:
 \code{\link{assertCompartmentName}()},
 \code{\link{assertRxUi}()},
 \code{\link{assertVariableExists}()},
-\code{\link{assertVariableNew}()}
+\code{\link{assertVariableNew}()},
+\code{\link{testRxUnbounded}()}
 }
 \author{
 Matthew Fidler & Bill Denney
diff --git a/man/assertRxUi.Rd b/man/assertRxUi.Rd
index e422d7efa..ee4d4e725 100644
--- a/man/assertRxUi.Rd
+++ b/man/assertRxUi.Rd
@@ -102,7 +102,8 @@ Other Assertions:
 \code{\link{assertCompartmentName}()},
 \code{\link{assertCompartmentNew}()},
 \code{\link{assertVariableExists}()},
-\code{\link{assertVariableNew}()}
+\code{\link{assertVariableNew}()},
+\code{\link{testRxUnbounded}()}
 }
 \author{
 Matthew L. Fidler
diff --git a/man/assertVariableExists.Rd b/man/assertVariableExists.Rd
index f6a4c949b..2f657e098 100644
--- a/man/assertVariableExists.Rd
+++ b/man/assertVariableExists.Rd
@@ -34,7 +34,8 @@ Other Assertions:
 \code{\link{assertCompartmentName}()},
 \code{\link{assertCompartmentNew}()},
 \code{\link{assertRxUi}()},
-\code{\link{assertVariableNew}()}
+\code{\link{assertVariableNew}()},
+\code{\link{testRxUnbounded}()}
 }
 \author{
 Matthew L. Fidler
diff --git a/man/assertVariableNew.Rd b/man/assertVariableNew.Rd
index 5167180de..b596b60e5 100644
--- a/man/assertVariableNew.Rd
+++ b/man/assertVariableNew.Rd
@@ -23,7 +23,8 @@ Other Assertions:
 \code{\link{assertCompartmentName}()},
 \code{\link{assertCompartmentNew}()},
 \code{\link{assertRxUi}()},
-\code{\link{assertVariableExists}()}
+\code{\link{assertVariableExists}()},
+\code{\link{testRxUnbounded}()}
 }
 \author{
 Matthew L. Fidler
diff --git a/man/reexports.Rd b/man/reexports.Rd
index 2857ff16d..8cba3d62e 100644
--- a/man/reexports.Rd
+++ b/man/reexports.Rd
@@ -38,4 +38,3 @@ below to see their documentation.
   \item{magrittr}{\code{\link[magrittr:pipe]{\%>\%}}}
 }}
 
-\value{ Inherited from parent routine }
diff --git a/man/rxode2.Rd b/man/rxode2.Rd
index af364b4f2..7477fbdb7 100644
--- a/man/rxode2.Rd
+++ b/man/rxode2.Rd
@@ -333,7 +333,7 @@ compilation model.
 
 \if{html}{\out{<div class="sourceCode">}}\preformatted{## using C compiler: ‘gcc (Ubuntu 11.4.0-1ubuntu1~22.04) 11.4.0’
 
-## rxode2 2.1.3.9000 model named rx_f0354f9c2871ad18f2498f9a38405373 model (ready). 
+## rxode2 2.1.3.9000 model named rx_8f661799cf47f5449921e8fbac648362 model (ready). 
 ## x$state: depot, center
 ## x$stateExtra: cp
 ## x$params: tka, tcl, tv, add.sd, eta.ka, eta.cl, eta.v, rxerr.cp
@@ -346,7 +346,7 @@ mod$simulationIniModel
 
 \if{html}{\out{<div class="sourceCode">}}\preformatted{## using C compiler: ‘gcc (Ubuntu 11.4.0-1ubuntu1~22.04) 11.4.0’
 
-## rxode2 2.1.3.9000 model named rx_c7662da228e359bf543bec87fc5e25c9 model (ready). 
+## rxode2 2.1.3.9000 model named rx_47bb7e55dc9a095ff1e536140b73b93e model (ready). 
 ## x$state: depot, center
 ## x$stateExtra: cp
 ## x$params: tka, tcl, tv, add.sd, eta.ka, eta.cl, eta.v, rxerr.cp
diff --git a/tests/testthat/test-assert.R b/tests/testthat/test-assert.R
index 96c66bcbb..5a497de93 100644
--- a/tests/testthat/test-assert.R
+++ b/tests/testthat/test-assert.R
@@ -1,5 +1,31 @@
 if (!.Call(`_rxode2_isIntel`)) {
-  test_that("assert or testRxLinCmt", {
+
+  test_that("no warnings/errors without boundaries", {
+
+    one.cmt <- function() {
+      ini({
+        tka <- 0.45; label("Ka")
+        tcl <- log(2.7); label("Cl")
+        tv <- 3.45; label("V")
+        eta.ka ~ 0.6
+        eta.cl ~ 0.3
+        eta.v ~ 0.1
+        add.sd <- 0.7
+      })
+      model({
+        ka <- exp(tka + eta.ka)
+        cl <- exp(tcl + eta.cl)
+        v <- exp(tv + eta.v)
+        linCmt() ~ add(add.sd)
+      })
+    }
+
+    expect_true(testRxUnbounded(one.cmt))
+    expect_error(assertRxUnbounded(one.cmt), NA)
+    expect_warning(warnRxBounded(one.cmt), NA)
+  })
+  test_that("assert or testRxLinCmt and boundaries", {
+
     one.cmt <- function() {
       ini({
         tka <- 0.45; label("Ka")
@@ -18,6 +44,10 @@ if (!.Call(`_rxode2_isIntel`)) {
       })
     }
 
+    expect_false(testRxUnbounded(one.cmt))
+    expect_error(assertRxUnbounded(one.cmt))
+    expect_warning(warnRxBounded(one.cmt))
+
     expect_error(assertRxLinCmt(one.cmt), NA)
     expect_true(testRxLinCmt(one.cmt))