1 files changed, 3 insertions, 0 deletions
diff --git a/FL/mac.H b/FL/mac.H
index 616eaeffc..84728ecc6 100644
--- a/FL/mac.H
+++ b/FL/mac.H
@@ -94,6 +94,9 @@ class NSOpenGLContext;
 
 typedef CGContextRef Fl_Offscreen;
 typedef CFMutableDataRef Fl_CFMutableDataRef;
+#if MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_4
+typedef CGImageAlphaInfo CGBitmapInfo;
+#endif
 
 typedef struct flCocoaRegion {
   int count;