diff --git a/c-programming/reverse-ramdisk.c b/c-programming/reverse-ramdisk.c
index da5a4d1..4177401 100644
--- a/c-programming/reverse-ramdisk.c
+++ b/c-programming/reverse-ramdisk.c
@@ -32,12 +32,16 @@
 
 #ifdef DEBUG
 # define LINE_FAIL(x) printf("failed on line %d\n", __LINE__ + x)
+#else
+# define LINE_FAIL(x)
+#endif
+
+#if defined(DEBUG) || defined(TEST)
 # define DBG_PRINT(...) do { \
 	printf(__VA_ARGS__); \
 	fflush(stdout); \
 } while (0)
 #else
-# define LINE_FAIL(x)
 # define DBG_PRINT(...)
 #endif