diff --git a/src/Makefile b/src/Makefile
index 8e03ff1..7bd113e 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -55,13 +55,13 @@ static: flags_$(BOXES_PLATFORM) | $(OUT_DIR)
 
 cov: flags_$(BOXES_PLATFORM) | $(OUT_DIR)
 	$(MAKE) -C $(OUT_DIR) -f $(SRC_DIR)/Makefile BOXES_PLATFORM=$(BOXES_PLATFORM) ALL_OBJ="$(ALL_OBJ)" STRIP=false \
-	    CFLAGS_ADDTL="-g --coverage $(CFLAGS_ADDTL)" \
+	    CFLAGS_ADDTL="--coverage $(CFLAGS_ADDTL)" \
 	    LDFLAGS_ADDTL="--coverage $(LDFLAGS_ADDTL)" \
 	    flags_$(BOXES_PLATFORM) $(BOXES_EXECUTABLE_NAME)
 
 debug: flags_$(BOXES_PLATFORM) | $(OUT_DIR)
 	$(MAKE) -C $(OUT_DIR) -f $(SRC_DIR)/Makefile BOXES_PLATFORM=$(BOXES_PLATFORM) ALL_OBJ="$(ALL_OBJ)" STRIP=false \
-	    CFLAGS_ADDTL="-g $(CFLAGS_ADDTL)" flags_$(BOXES_PLATFORM) $(BOXES_EXECUTABLE_NAME)
+	    CFLAGS_ADDTL="-ggdb3 $(CFLAGS_ADDTL)" flags_$(BOXES_PLATFORM) $(BOXES_EXECUTABLE_NAME)
 
 boxes: $(ALL_OBJ) | check_dir
 	$(CC) $(LDFLAGS) $^ -o $@ -lunistring -lpcre2-32 -lncurses