diff --git a/src/powdertoyjava/OpenGLCanvasMacOS.h b/src/powdertoyjava/OpenGLCanvasMacOS.h
index 3f3d68f63..cee495a8e 100644
--- a/src/powdertoyjava/OpenGLCanvasMacOS.h
+++ b/src/powdertoyjava/OpenGLCanvasMacOS.h
@@ -1,3 +1,4 @@
+#ifdef USE_JNI
 #import <jawt_md.h>
 
 #import <Cocoa/Cocoa.h>
@@ -30,4 +31,5 @@ extern "C" {
 	JNIEXPORT void JNICALL Java_OpenGLCanvas_releaseOpenGL(JNIEnv *env, jobject canvas);
 #ifdef __cplusplus
 }
+#endif
 #endif
\ No newline at end of file
diff --git a/src/powdertoyjava/OpenGLCanvasMacOS.mm b/src/powdertoyjava/OpenGLCanvasMacOS.mm
index 009c32e21..c169c5f39 100644
--- a/src/powdertoyjava/OpenGLCanvasMacOS.mm
+++ b/src/powdertoyjava/OpenGLCanvasMacOS.mm
@@ -1,3 +1,4 @@
+#ifdef USE_JNI
 #include "OpenGLCanvasMacOS.h"
 
 static jfieldID ctxID = NULL;
@@ -164,4 +165,5 @@ JNIEXPORT void JNICALL Java_OpenGLCanvas_releaseOpenGL(JNIEnv *env, jobject canv
     }
 	
 	freeContext(env, canvas, ci);
-}
\ No newline at end of file
+}
+#endif
\ No newline at end of file