diff --git a/tests/unittest.sh b/tests/unittest.sh
index c070d68..2c6f587 100755
--- a/tests/unittest.sh
+++ b/tests/unittest.sh
@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 
-CC="gcc -Wall"
+CC="${CC:-gcc} -Wall"
 
 $CC ../ini.c unittest.c -o unittest_multi
 ./unittest_multi > baseline_multi.txt