1 files changed, 1 insertions, 1 deletions
diff --git a/src/Makefile.am b/src/Makefile.am
index 9664099af..ec6622a88 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -1038,7 +1038,7 @@ manaplus_SOURCES += \
 	      animatedsprite_unittest.cc \
 	      gui/sdlfont_unittest.cc \
 	      gui/widgets/browserbox_unittest.cc \
-	      utils/files_unittest.cpp \
+	      utils/files_unittest.cc \
 	      utils/stringutils_unittest.cc \
 	      resources/dye_unittest.cc
 endif