diff --git a/diff-merges.c b/diff-merges.c
index eff54cca828..34d7ed7c70b 100644
--- a/diff-merges.c
+++ b/diff-merges.c
@@ -21,10 +21,6 @@ static void set_dense_combined(struct rev_info *revs)
  * Public functions. They are in the order they are called.
  */
 
-void diff_merges_init_revs(struct rev_info *revs)
-{
-}
-
 int diff_merges_parse_opts(struct rev_info *revs, const char **argv)
 {
 	int argcount = 1;
diff --git a/diff-merges.h b/diff-merges.h
index f92de137d3a..659467c99a4 100644
--- a/diff-merges.h
+++ b/diff-merges.h
@@ -9,8 +9,6 @@
 
 struct rev_info;
 
-void diff_merges_init_revs(struct rev_info *revs);
-
 int diff_merges_parse_opts(struct rev_info *revs, const char **argv);
 
 void diff_merges_suppress(struct rev_info *revs);
diff --git a/revision.c b/revision.c
index 5a0e3d6ad54..46645ca0b6d 100644
--- a/revision.c
+++ b/revision.c
@@ -1814,7 +1814,6 @@ void repo_init_revisions(struct repository *r,
 
 	revs->repo = r;
 	revs->abbrev = DEFAULT_ABBREV;
-	diff_merges_init_revs(revs);
 	revs->simplify_history = 1;
 	revs->pruning.repo = r;
 	revs->pruning.flags.recursive = 1;