diff --git a/meson.build b/meson.build
index dca843b..bca1ac8 100644
--- a/meson.build
+++ b/meson.build
@@ -14,6 +14,7 @@ add_project_arguments(cc.get_supported_arguments([
 	'-Wno-missing-field-initializers',
 	'-Wno-unused-parameter',
 	'-D_POSIX_C_SOURCE=200809L',
+	'-D_GNU_SOURCE',
 ]), language: 'c')
 
 prefix = get_option('prefix')
diff --git a/src/core/utils.c b/src/core/utils.c
index 2d757e6..1add9ad 100644
--- a/src/core/utils.c
+++ b/src/core/utils.c
@@ -1,3 +1,4 @@
+#include <stdio.h>
 #include "utils.h"
 
 char *getFormat(const char *fmt, ...) {
@@ -9,4 +10,4 @@ char *getFormat(const char *fmt, ...) {
     va_end(args);
 
     return outputStr;
-}
\ No newline at end of file
+}