diff --git a/source/tools/murun.c b/source/tools/murun.c
index 1880fab..471cec0 100644
--- a/source/tools/murun.c
+++ b/source/tools/murun.c
@@ -5390,6 +5390,7 @@ static void ffi_Pixmap_saveAsPKM(js_State *J)
 		rethrow(J);
 }
 
+#if FZ_ENABLE_JPX
 static void ffi_Pixmap_saveAsJPX(js_State *J)
 {
 	fz_context *ctx = js_getcontext(J);
@@ -5402,6 +5403,7 @@ static void ffi_Pixmap_saveAsJPX(js_State *J)
 	fz_catch(ctx)
 		rethrow(J);
 }
+#endif
 
 static void ffi_Pixmap_convertToColorSpace(js_State *J)
 {
@@ -12521,7 +12523,9 @@ int murun_main(int argc, char **argv)
 		jsB_propfun(J, "Pixmap.saveAsPNM", ffi_Pixmap_saveAsPNM, 1);
 		jsB_propfun(J, "Pixmap.saveAsPBM", ffi_Pixmap_saveAsPBM, 1);
 		jsB_propfun(J, "Pixmap.saveAsPKM", ffi_Pixmap_saveAsPKM, 1);
+        #if FZ_ENABLE_JPX
 		jsB_propfun(J, "Pixmap.saveAsJPX", ffi_Pixmap_saveAsJPX, 2);
+        #endif
 	}
 	js_setregistry(J, "fz_pixmap");