diff --git a/closed/src/java.base/share/classes/openj9/internal/security/RestrictedSecurity.java b/closed/src/java.base/share/classes/openj9/internal/security/RestrictedSecurity.java
index 9bacf62f094..9040166159f 100644
--- a/closed/src/java.base/share/classes/openj9/internal/security/RestrictedSecurity.java
+++ b/closed/src/java.base/share/classes/openj9/internal/security/RestrictedSecurity.java
@@ -585,10 +585,10 @@ private void initProviders() {
                 // Provider with argument (provider name + optional argument).
                 providers.add(pNum - 1, providerName);
 
-                // Remove the provider's optional arguments if there are.
+                // Remove the provider's optional arguments if present.
                 pos = providerName.indexOf(' ');
                 providerName = (pos < 0) ? providerName.trim() : providerName.substring(0, pos).trim();
-                // Remove the provider's class package names if there are.
+                // Remove the provider's class package names if present.
                 pos = providerName.lastIndexOf('.');
                 providerName = (pos < 0) ? providerName : providerName.substring(pos + 1, providerName.length());
                 // Provider without arguments and package names.
@@ -673,7 +673,7 @@ private void initConstraints() {
                     continue;
                 }
 
-                // Remove the whitespaces in the format separator if there are.
+                // Remove the whitespaces in the format separator if present.
                 providerInfo = providerInfo.trim()
                         .replaceAll("\\[\\s+\\{", "[{")
                         .replaceAll("\\}\\s+\\]", "}]")
@@ -759,6 +759,10 @@ boolean isRestrictedServiceAllowed(Service service) {
 
             if (constraints == null) {
                 // Disallow unknown providers.
+                if (debug != null) {
+                    debug.println("Security constraints check."
+                            + " Disallow unknown provider: " + providerName);
+                }
                 return false;
             } else if (constraints.length == 0) {
                 // Allow this provider with no constraints.
@@ -774,12 +778,12 @@ boolean isRestrictedServiceAllowed(Service service) {
                 String cAlgorithm = constraint.algorithm;
                 String cAttribute = constraint.attributes;
 
-                if (!isAsterisk(cType) && !type.equals(cType)) {
+                if (!isAsterisk(cType) && !type.equalsIgnoreCase(cType)) {
                     // The constraint doesn't apply to the service type.
                     continue;
                 }
                 if (!isAsterisk(cAlgorithm) && !algorithm.equalsIgnoreCase(cAlgorithm)) {
-                    // The constraint doesn't apply to the service algorith.
+                    // The constraint doesn't apply to the service algorithm.
                     continue;
                 }
 
@@ -789,7 +793,7 @@ boolean isRestrictedServiceAllowed(Service service) {
                         debug.println("Security constraints check."
                                 + " Service type: " + type
                                 + " Algorithm: " + algorithm
-                                + " is allowed in provider " + providerName);
+                                + " is allowed in provider: " + providerName);
                     }
                     return true;
                 }
@@ -832,7 +836,7 @@ boolean isRestrictedServiceAllowed(Service service) {
                 debug.println("Security constraints check."
                         + " Service type: " + type
                         + " Algorithm: " + algorithm
-                        + " is NOT allowed in provider " + providerName);
+                        + " is NOT allowed in provider: " + providerName);
             }
             // No match for any constraint, return NOT allowed.
             return false;
@@ -849,11 +853,11 @@ boolean isRestrictedProviderAllowed(String providerName) {
                 debug.println("Checking the provider " + providerName + " in restricted security mode.");
             }
 
-            // Remove argument, e.g. -NSS-FIPS, if there is.
+            // Remove argument, e.g. -NSS-FIPS, if present.
             int pos = providerName.indexOf('-');
             providerName = (pos < 0) ? providerName : providerName.substring(0, pos);
 
-            // Remove the provider class package name if there is.
+            // Remove the provider class package name if present.
             pos = providerName.lastIndexOf('.');
             providerName = (pos < 0) ? providerName : providerName.substring(pos + 1, providerName.length());
 
diff --git a/src/java.base/share/classes/java/security/Provider.java b/src/java.base/share/classes/java/security/Provider.java
index 06aa6d1395f..e3edf7c135a 100644
--- a/src/java.base/share/classes/java/security/Provider.java
+++ b/src/java.base/share/classes/java/security/Provider.java
@@ -1159,7 +1159,7 @@ private void removeInvalidServices(Map<ServiceKey,Service> map) {
         for (Iterator<Map.Entry<ServiceKey, Service>> t =
                 map.entrySet().iterator(); t.hasNext(); ) {
             Service s = t.next().getValue();
-            if (s.isValid() == false) {
+            if ((s.isValid() == false) || !RestrictedSecurity.isServiceAllowed(s)) {
                 t.remove();
             }
         }