diff --git a/src/fd_control.c b/src/fd_control.c
index d24d56ee6fb7f79428e2a8e88862c142297cf73a..024f8eba3516b1cec5174601b4f4fc6dbd54edda 100644
--- a/src/fd_control.c
+++ b/src/fd_control.c
@@ -10,6 +10,8 @@
 
 #ifndef TESTING
 #include "global.h"
+#else
+#undef DEBUG
 #endif
 
 #ifdef HAVE_FCNTL_H