diff --git a/bundles/org.eclipse.swt/Eclipse SWT PI/gtk/library/make_linux.mak b/bundles/org.eclipse.swt/Eclipse SWT PI/gtk/library/make_linux.mak
index 83e76f5937d..1791209a504 100644
--- a/bundles/org.eclipse.swt/Eclipse SWT PI/gtk/library/make_linux.mak	
+++ b/bundles/org.eclipse.swt/Eclipse SWT PI/gtk/library/make_linux.mak	
@@ -106,6 +106,7 @@ CFLAGS := $(CFLAGS) \
 		-DLINUX -DGTK \
 		-I$(SWT_JAVA_HOME)/include \
 		-I$(SWT_JAVA_HOME)/include/linux \
+		-std=gnu17 \
 		${SWT_PTR_CFLAGS}
 LFLAGS = -shared -fPIC ${SWT_LFLAGS}