diff --git a/grep.c b/grep.c
index 925aa92f89..c7f8a47505 100644
--- a/grep.c
+++ b/grep.c
@@ -3,6 +3,10 @@
 #include "userdiff.h"
 #include "xdiff-interface.h"
 
+static int grep_source_load(struct grep_source *gs);
+static int grep_source_is_binary(struct grep_source *gs);
+
+
 static struct grep_pat *create_grep_pat(const char *pat, size_t patlen,
 					const char *origin, int no,
 					enum grep_pat_token t,
@@ -403,7 +407,7 @@ static void dump_grep_expression_1(struct grep_expr *x, int in)
 	}
 }
 
-void dump_grep_expression(struct grep_opt *opt)
+static void dump_grep_expression(struct grep_opt *opt)
 {
 	struct grep_expr *x = opt->pattern_expression;
 
diff --git a/grep.h b/grep.h
index bf5be5ada4..d66b19712c 100644
--- a/grep.h
+++ b/grep.h
@@ -149,11 +149,10 @@ struct grep_source {
 
 void grep_source_init(struct grep_source *gs, enum grep_source_type type,
 		      const char *name, const void *identifier);
-int grep_source_load(struct grep_source *gs);
 void grep_source_clear_data(struct grep_source *gs);
 void grep_source_clear(struct grep_source *gs);
 void grep_source_load_driver(struct grep_source *gs);
-int grep_source_is_binary(struct grep_source *gs);
+
 
 int grep_source(struct grep_opt *opt, struct grep_source *gs);