diff --git a/buildSrc/src/main/groovy/multiloader-common.gradle b/buildSrc/src/main/groovy/multiloader-common.gradle
index e76cb94..7242da3 100644
--- a/buildSrc/src/main/groovy/multiloader-common.gradle
+++ b/buildSrc/src/main/groovy/multiloader-common.gradle
@@ -37,8 +37,8 @@ dependencies {
 // Read more about capabilities here: https://docs.gradle.org/current/userguide/component_capabilities.html#sec:declaring-additional-capabilities-for-a-local-component
 ['apiElements', 'runtimeElements', 'sourcesElements', 'javadocElements'].each { variant ->
     configurations."$variant".outgoing {
-        capability("$group:$mod_id-${project.name}:$version")
-        capability("$group:$mod_id:$version")
+        capability("$group:${mod_id.replace('_', '-')}-${project.name}:$version")
+        capability("$group:${mod_id.replace('_', '-')}:$version")
     }
     publishing.publications.configureEach {
         suppressPomMetadataWarningsFor(variant)
diff --git a/buildSrc/src/main/groovy/multiloader-loader.gradle b/buildSrc/src/main/groovy/multiloader-loader.gradle
index 5703a1f..8894127 100644
--- a/buildSrc/src/main/groovy/multiloader-loader.gradle
+++ b/buildSrc/src/main/groovy/multiloader-loader.gradle
@@ -17,7 +17,7 @@ configurations {
 dependencies {
     compileOnly(project("${project.parent?.path}:common")) {
         capabilities {
-            requireCapability "$group:$mod_id"
+            requireCapability "$group:${mod_id.replace('_', '-')}"
         }
     }
     commonJava project(path: "${project.parent?.path}:common", configuration: 'commonJava')