diff --git a/include/internal/generic/fmpi_task_generic.h b/include/internal/generic/fmpi_task_generic.h
index 350abd0e6db958d73fcbdf5480892b0bf9e2e6eb..68fcf134875f6756445a554e8a95f741a3661e37 100644
--- a/include/internal/generic/fmpi_task_generic.h
+++ b/include/internal/generic/fmpi_task_generic.h
@@ -26,6 +26,9 @@
 /*==============================================================================
     INCLUDE
 ==============================================================================*/
+// C Standard Library
+#include <assert.h>
+#include <stddef.h> // NULL
 // External
 #include "../../../external/cpl/cpl_arg.h"
 #include "../../../external/cpl/cpl_map.h"