diff --git a/Makefile.am b/Makefile.am
index 2253a7c..f6f4810 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -76,7 +76,7 @@
IDENTIFY="$(MEMCHECK) @abs_top_builddir@/utilities/identify" \
MONTAGE="$(MEMCHECK) @abs_top_builddir@/utilities/montage" \
VALIDATE="$(MEMCHECK) @abs_top_builddir@/tests/validate" \
- REFERENCE_IMAGE="$(MEMCHECK) @abs_top_builddir@/images/rose.pnm" \
+ REFERENCE_IMAGE="@abs_top_builddir@/images/rose.pnm" \
LD_LIBRARY_PATH="@abs_top_builddir@/magick/.libs:${LD_LIBRARY_PATH}" \
MAGICK_CODER_MODULE_PATH='@MAGICK_CODER_MODULE_PATH@' \
MAGICK_CONFIGURE_PATH='@MAGICK_CONFIGURE_BUILD_PATH@@DIRSEP@@MAGICK_CONFIGURE_SRC_PATH@' \