diff --git a/docs/proposals.html b/docs/proposals.html
index 572a875..a945aa8 100644
--- a/docs/proposals.html
+++ b/docs/proposals.html
@@ -544,7 +544,7 @@ This proposal documents the previously implicit state machine for PortAudio Stre
 PortAudio streams will function according to the following state machine:
 </P>
 <P>
-<IMG src="PaStreamStateDiagram.GIF">
+<IMG src="PaStreamStateDiagram.gif">
 </P>
 <P>
 A new function Pa_IsStreamStopped() will be added to allow clients to determine whether the Stream is in the Stopped state.