diff --git a/gfx/drivers_shader/glslang.cpp b/gfx/drivers_shader/glslang.cpp
index 577fc0acdb..fc3bda5424 100644
--- a/gfx/drivers_shader/glslang.cpp
+++ b/gfx/drivers_shader/glslang.cpp
@@ -13,6 +13,7 @@
  *  If not, see <http://www.gnu.org/licenses/>.
  */
 
+#include <compat/posix_string.h>
 #include <string/stdstring.h>
 
 #include "glslang.hpp"