diff --git a/Headers/gnustep/gui/NSAffineTransform.h b/Headers/gnustep/gui/NSAffineTransform.h
index d395954a9..51a090876 100644
--- a/Headers/gnustep/gui/NSAffineTransform.h
+++ b/Headers/gnustep/gui/NSAffineTransform.h
@@ -96,6 +96,8 @@ typedef	struct {
 - (void) setMatrix: (const float[6])replace;
 - (void) getMatrix: (float[6])replace;
 
+- (void) getMatrixFromTransform: (NSAffineTransform *)other;
+
 @end
 #endif