diff --git a/doc/ReleaseNotes b/doc/ReleaseNotes
index 157a20b2bf..b7462a97d6 100644
--- a/doc/ReleaseNotes
+++ b/doc/ReleaseNotes
@@ -47,6 +47,7 @@ This issue fixes several bugs that were still found in 1.9.2.
 * Fix compilation errors with Bullet 2.84
 * Fix exception when trying to pickle NodePathCollection objects
 * Fix error when trying to raise vectors to a power
+* GLSL: fix error when legacy matrix generator inputs are mat3
 
 ------------------------  RELEASE 1.9.2  ------------------------