diff --git a/compat/mingw.c b/compat/mingw.c
index f572bad46a..52ad1d2599 100644
--- a/compat/mingw.c
+++ b/compat/mingw.c
@@ -243,7 +243,7 @@ static char *unset_environment_variables;
 int core_fscache;
 int core_long_paths;
 
-int mingw_core_config(const char *var, const char *value)
+int mingw_core_config(const char *var, const char *value, void *cb)
 {
 	if (!strcmp(var, "core.hidedotfiles")) {
 		if (value && !strcasecmp(value, "dotgitonly"))
diff --git a/compat/mingw.h b/compat/mingw.h
index 677f35fe4f..6c80ec98cd 100644
--- a/compat/mingw.h
+++ b/compat/mingw.h
@@ -14,7 +14,7 @@ typedef _sigset_t sigset_t;
 extern int core_fscache;
 extern int core_long_paths;
 
-extern int mingw_core_config(const char *var, const char *value);
+extern int mingw_core_config(const char *var, const char *value, void *cb);
 #define platform_core_config mingw_core_config
 
 /*
diff --git a/config.c b/config.c
index e296c97f68..d22732865a 100644
--- a/config.c
+++ b/config.c
@@ -991,7 +991,7 @@ int git_config_pathname(const char **dest, const char *var, const char *value)
 	return 0;
 }
 
-static int git_default_core_config(const char *var, const char *value)
+static int git_default_core_config(const char *var, const char *value, void *cb)
 {
 	/* This needs a better name */
 	if (!strcmp(var, "core.filemode")) {
@@ -1235,7 +1235,7 @@ static int git_default_core_config(const char *var, const char *value)
 	}
 
 	/* Add other config variables here and to Documentation/config.txt. */
-	return platform_core_config(var, value);
+	return platform_core_config(var, value, cb);
 }
 
 static int git_default_i18n_config(const char *var, const char *value)
@@ -1323,7 +1323,7 @@ static int git_default_mailmap_config(const char *var, const char *value)
 int git_default_config(const char *var, const char *value, void *cb)
 {
 	if (starts_with(var, "core."))
-		return git_default_core_config(var, value);
+		return git_default_core_config(var, value, cb);
 
 	if (starts_with(var, "user."))
 		return git_ident_config(var, value, cb);
diff --git a/git-compat-util.h b/git-compat-util.h
index a31207c4dc..17e1807f7e 100644
--- a/git-compat-util.h
+++ b/git-compat-util.h
@@ -394,7 +394,7 @@ typedef uintmax_t timestamp_t;
 #endif
 
 #ifndef platform_core_config
-static inline int noop_core_config(const char *var, const char *value)
+static inline int noop_core_config(const char *var, const char *value, void *cb)
 {
 	return 0;
 }