diff --git a/firmware/Makefile b/firmware/Makefile
index 673be8c..a1c4e05 100644
--- a/firmware/Makefile
+++ b/firmware/Makefile
@@ -251,7 +251,11 @@ TESTCASES	:= $(shell $(FIND) test/tc -name '*.[h]')
 test: test/main.py all
 	@echo "Running tests..."
 	@echo $(tc) > test/.testcommand
+ifdef tc-gdb-info
 	$(DB) -q -x test/tests.py
+else
+	@>/dev/null $(DB) -q -x test/tests.py
+endif
 
 # Ctypesgen for test
 test/main.py: test/tmain.c $(TESTCASES)
diff --git a/firmware/test/README.md b/firmware/test/README.md
index e8ab50d..2076ba1 100644
--- a/firmware/test/README.md
+++ b/firmware/test/README.md
@@ -31,7 +31,11 @@ to run all tests, or
 make test tc=<tc name>
 ```
 
-to run a specific test case
+to run a specific test case. To get extra debug info
+
+```
+make test tc=<tc name> tc-gdb-info=1
+```
 
 #### Operation