diff --git a/porting/npl/linux/include/nimble/os_types.h b/porting/npl/linux/include/nimble/os_types.h
index a5d8bf548..aa24745f5 100644
--- a/porting/npl/linux/include/nimble/os_types.h
+++ b/porting/npl/linux/include/nimble/os_types.h
@@ -21,7 +21,6 @@
 #define _NPL_OS_TYPES_H
 
 #include <time.h>
-#include <signal.h>
 #include <stdbool.h>
 #include <pthread.h>
 #include <semaphore.h>