diff --git a/avm/res/managed-identity/user-assigned-identity/tests/e2e/defaults/main.test.bicep b/avm/res/managed-identity/user-assigned-identity/tests/e2e/defaults/main.test.bicep
index 6e27ba0608..12e87cf416 100644
--- a/avm/res/managed-identity/user-assigned-identity/tests/e2e/defaults/main.test.bicep
+++ b/avm/res/managed-identity/user-assigned-identity/tests/e2e/defaults/main.test.bicep
@@ -18,7 +18,7 @@ param location string = deployment().location
 param serviceShort string = 'miuaimin'
 
 @description('Optional. A token to inject into the name of each resource.')
-param namePrefix string = '[[namePrefix]]'
+param namePrefix string = '#_namePrefix_#'
 
 // ============ //
 // Dependencies //
diff --git a/avm/res/managed-identity/user-assigned-identity/tests/e2e/max/main.test.bicep b/avm/res/managed-identity/user-assigned-identity/tests/e2e/max/main.test.bicep
index a706203124..c4edfe9f3d 100644
--- a/avm/res/managed-identity/user-assigned-identity/tests/e2e/max/main.test.bicep
+++ b/avm/res/managed-identity/user-assigned-identity/tests/e2e/max/main.test.bicep
@@ -18,7 +18,7 @@ param location string = deployment().location
 param serviceShort string = 'miuaimax'
 
 @description('Optional. A token to inject into the name of each resource.')
-param namePrefix string = '[[namePrefix]]'
+param namePrefix string = '#_namePrefix_#'
 
 // ============ //
 // Dependencies //
diff --git a/avm/res/managed-identity/user-assigned-identity/tests/e2e/waf-aligned/main.test.bicep b/avm/res/managed-identity/user-assigned-identity/tests/e2e/waf-aligned/main.test.bicep
index 060548c4e7..980f1590d6 100644
--- a/avm/res/managed-identity/user-assigned-identity/tests/e2e/waf-aligned/main.test.bicep
+++ b/avm/res/managed-identity/user-assigned-identity/tests/e2e/waf-aligned/main.test.bicep
@@ -18,7 +18,7 @@ param location string = deployment().location
 param serviceShort string = 'miuaiwaf'
 
 @description('Optional. A token to inject into the name of each resource.')
-param namePrefix string = '[[namePrefix]]'
+param namePrefix string = '#_namePrefix_#'
 
 // ============ //
 // Dependencies //