diff --git a/clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-narrowing-conversions-equivalentbitwidth-option.cpp b/clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-narrowing-conversions-equivalentbitwidth-option.cpp
--- a/clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-narrowing-conversions-equivalentbitwidth-option.cpp
+++ b/clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-narrowing-conversions-equivalentbitwidth-option.cpp
@@ -18,19 +18,21 @@
 
   float f;
   i = f;
-  // CHECK-MESSAGES-DEFAULT: :[[@LINE-1]]:7: warning: narrowing conversion from 'float' to signed type 'int' is implementation-defined [cppcoreguidelines-narrowing-conversions]
+  // CHECK-MESSAGES-DEFAULT: :[[@LINE-1]]:7: warning: narrowing conversion from 'float' to 'int' [cppcoreguidelines-narrowing-conversions]
   // DISABLED: Warning disabled with WarnOnEquivalentBitWidth=0.
+
   f = i;
-  // CHECK-MESSAGES-DEFAULT: :[[@LINE-1]]:7: warning: narrowing conversion from 'int' to signed type 'float' is implementation-defined [cppcoreguidelines-narrowing-conversions]
+  // CHECK-MESSAGES-DEFAULT: :[[@LINE-1]]:7: warning: narrowing conversion from 'int' to 'float' [cppcoreguidelines-narrowing-conversions]
   // DISABLED: Warning disabled with WarnOnEquivalentBitWidth=0.
 
   long long ll;
   double d;
   ll = d;
-  // CHECK-MESSAGES-DEFAULT: :[[@LINE-1]]:8: warning: narrowing conversion from 'double' to signed type 'long long' is implementation-defined [cppcoreguidelines-narrowing-conversions]
+  // CHECK-MESSAGES-DEFAULT: :[[@LINE-1]]:8: warning: narrowing conversion from 'double' to 'long long' [cppcoreguidelines-narrowing-conversions]
   // DISABLED: Warning disabled with WarnOnEquivalentBitWidth=0.
+
   d = ll;
-  // CHECK-MESSAGES-DEFAULT: :[[@LINE-1]]:7: warning: narrowing conversion from 'long long' to signed type 'double' is implementation-defined [cppcoreguidelines-narrowing-conversions]
+  // CHECK-MESSAGES-DEFAULT: :[[@LINE-1]]:7: warning: narrowing conversion from 'long long' to 'double' [cppcoreguidelines-narrowing-conversions]
   // DISABLED: Warning disabled with WarnOnEquivalentBitWidth=0.
 }