diff --git a/tools/test.py b/tools/test.py
index c9b897dc05..9e6a0fc2f6 100644
--- a/tools/test.py
+++ b/tools/test.py
@@ -261,11 +261,11 @@ def main():
                 library_build_success = True
             except ToolException as e:
                 # ToolException output is handled by the build log
-                print("ERROR: " + str(e))
+                print("[ERROR] " + str(e))
                 pass
             except NotSupportedException as e:
                 # NotSupportedException is handled by the build log
-                print("ERROR: " + str(e))
+                print("[ERROR] " + str(e))
                 pass
             except Exception as e:
                 if options.verbose: