diff --git a/include/maxscale/semaphore.h b/include/maxscale/semaphore.h
index a231bfd6f..86387b6a8 100644
--- a/include/maxscale/semaphore.h
+++ b/include/maxscale/semaphore.h
@@ -19,4 +19,5 @@
 // As a minimal preparation for other environments than Linux, components
 // include <maxscale/semaphore.h>,  instead of including <semaphore.h>
 // directly.
+#include <maxscale/cdefs.h>
 #include <semaphore.h>
diff --git a/include/maxscale/sqlite3.h b/include/maxscale/sqlite3.h
index 33681bed5..ee95e1f6a 100644
--- a/include/maxscale/sqlite3.h
+++ b/include/maxscale/sqlite3.h
@@ -12,6 +12,7 @@
  * Public License.
  */
 
+#include <maxscale/cdefs.h>
 #include <sqlite3.h>
 
 /**