diff --git a/Makefile b/Makefile
index 186a8efd1..5de4247fb 100644
--- a/Makefile
+++ b/Makefile
@@ -1301,7 +1301,7 @@ endif
 
 ### Testing rules
 
-TEST_PROGRAMS = test-chmtime$X test-genrandom$X test-date$X test-delta$X test-sha1$X test-match-trees$X test-parse-options$X test-path-utils$X
+TEST_PROGRAMS = test-chmtime$X test-dump-cache-tree$X test-genrandom$X test-date$X test-delta$X test-sha1$X test-match-trees$X test-parse-options$X test-path-utils$X
 
 all:: $(TEST_PROGRAMS)
 
diff --git a/dump-cache-tree.c b/test-dump-cache-tree.c
similarity index 100%
rename from dump-cache-tree.c
rename to test-dump-cache-tree.c