diff --git a/CMakeLists.txt b/CMakeLists.txt
index e5be9f3..ab75457 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -85,6 +85,7 @@ list(APPEND RE_DEFINITIONS
   VER_MAJOR=${PROJECT_VERSION_MAJOR}
   VER_MINOR=${PROJECT_VERSION_MINOR}
   VER_PATCH=${PROJECT_VERSION_PATCH}
+  _GNU_SOURCE
 )
 
 add_compile_definitions(${RE_DEFINITIONS})
diff --git a/modules/vidloop/vidloop.c b/modules/vidloop/vidloop.c
index 733e775..ecf81c8 100644
--- a/modules/vidloop/vidloop.c
+++ b/modules/vidloop/vidloop.c
@@ -3,8 +3,6 @@
  *
  * Copyright (C) 2010 Alfred E. Heggestad
  */
-#define _DEFAULT_SOURCE 1
-#define _BSD_SOURCE 1
 #include <string.h>
 #include <time.h>
 #include <re.h>