diff --git a/doc/images/Makefile.am b/doc/images/Makefile.am
index ab4fcbc5805..1ab0bd06f21 100644
--- a/doc/images/Makefile.am
+++ b/doc/images/Makefile.am
@@ -6,4 +6,4 @@
 EXTRA_DIST = block-cyclic.png block-cyclic-rearr.png dof.png	\
 dof-rearr.png PIO_Intracomm1.png PIO_Library_Architecture1.jpg	\
 PIO_Decomposition.png I_O_on_Few.png I_O_on_Many_Intracomm.png	\
-I_O_on_Many_Async.jpg PIO_Async.png
+I_O_on_Many_Async.png PIO_Async.png