diff -r 0015bf3a82e0 -r 489867818774 src/java.desktop/share/native/common/java2d/opengl/OGLContext.c
--- a/src/java.desktop/share/native/common/java2d/opengl/OGLContext.c	Fri Mar 02 19:10:12 2018 +0100
+++ b/src/java.desktop/share/native/common/java2d/opengl/OGLContext.c	Sat Mar 03 08:21:47 2018 +0100
@@ -113,7 +113,7 @@
  * fully opaque alpha values.
  */
 static void
-OGLContext_InitAlphaChannel()
+OGLContext_InitAlphaChannel(void)
 {
     GLboolean scissorEnabled;