diff --git a/Makefile b/Makefile
index ffbd9d7..151c5f8 100644
--- a/Makefile
+++ b/Makefile
@@ -83,7 +83,7 @@ $(NAME): $(OBJ)
 	$(CC) -o $(NAME) $(OBJ) $(LDFLAGS)
 
 tests_run: clean
-	$(CC) -o $(UT) $(TESTS) $(SRC) $(COVERAGE) $(CFLAGS) $(LDFLAGS)
+	$(CC) -o $(UT) $(TESTS) $(SRC) $(COVERAGE) -g $(CFLAGS) $(LDFLAGS)
 	$(UT)
 
 func: all
diff --git a/tests/tsource.c b/tests/tsource.c
index 8e7c7b2..00f5803 100644
--- a/tests/tsource.c
+++ b/tests/tsource.c
@@ -15,7 +15,7 @@
 
 Test(get_special_arg_at, at_arg)
 {
-    char **argv = split_str(strdup("source file a b c"), (char *[]) {" "});
+    char **argv = split_str(strdup("source file a b c"), (char *[]) {" ", NULL});
     int argv_len = 5;
     char *res = NULL;
 
@@ -26,7 +26,7 @@ Test(get_special_arg_at, at_arg)
 
 Test(get_special_arg_star, at_arg)
 {
-    char **argv = split_str(strdup("source file a b c"), (char *[]) {" "});
+    char **argv = split_str(strdup("source file a b c"), (char *[]) {" ", NULL});
     int argv_len = 5;
     char *res = NULL;