diff --git a/builddefs/build_test.mk b/builddefs/build_test.mk
index 64db99fed91..7c8fdd20e5a 100644
--- a/builddefs/build_test.mk
+++ b/builddefs/build_test.mk
@@ -71,7 +71,7 @@ include $(BUILDDEFS_PATH)/build_full_test.mk
 endif
 
 $(TEST)_SRC += \
-	tests/test_common/main.c \
+	tests/test_common/main.cpp \
 	$(QUANTUM_PATH)/logging/print.c
 
 $(TEST_OBJ)/$(TEST)_SRC := $($(TEST)_SRC)
diff --git a/tests/test_common/main.cpp b/tests/test_common/main.cpp
index 3e4b4c0f954..0f4e320b07e 100644
--- a/tests/test_common/main.cpp
+++ b/tests/test_common/main.cpp
@@ -5,7 +5,7 @@ extern "C" {
 #include "debug.h"
 
 int8_t sendchar(uint8_t c) {
-    fprintf(stderr, "%c", c);
+    fprintf(stdout, "%c", c);
     return 0;
 }