diff --git a/src/database.c b/src/database.c
index 7c8322a..7998804 100644
--- a/src/database.c
+++ b/src/database.c
@@ -44,7 +44,7 @@
 
 const char *imdb_hdr_fmt = "IMDB v%02u, CAPS: %s;";
 
-int db_open(imdb_t *db, const char *path)
+int imdb_open(imdb_t *db, const char *path)
 {
   int init = 0;
   ssize_t bytes = 0;
@@ -82,7 +82,7 @@ int db_open(imdb_t *db, const char *path)
   return 0;
 }
 
-int db_close(imdb_t *db)
+int imdb_close(imdb_t *db)
 {
   assert(db != NULL);
 
diff --git a/src/database.h b/src/database.h
index 2c5da95..2cda218 100644
--- a/src/database.h
+++ b/src/database.h
@@ -67,8 +67,8 @@ typedef struct {
   float diff;
 } match_t;
 
-extern int db_open(imdb_t *db, const char *path);
-extern int db_close(imdb_t *db);
+extern int imdb_open(imdb_t *db, const char *path);
+extern int imdb_close(imdb_t *db);
 
 extern int db_rd_rec(imdb_t *db, imdb_rec_t *rec);
 extern int db_wr_rec(imdb_t *db, imdb_rec_t *rec);
diff --git a/src/util.c b/src/util.c
index 2cfb56a..1ab7034 100644
--- a/src/util.c
+++ b/src/util.c
@@ -238,7 +238,7 @@ int main(int argc, char **argv)
   if (mode == diff && (a <= 0 || b <= 0))
     usage(EXIT_FAILURE);
 
-  if (db_open(&db, db_path) == -1) {
+  if (imdb_open(&db, db_path) == -1) {
     printf("%s\n", db.errstr);
     exit(EXIT_FAILURE);
   }
@@ -255,7 +255,7 @@ int main(int argc, char **argv)
   if (mode == diff)
     rec_diff(&db, a, b, map);
 
-  db_close(&db);
+  imdb_close(&db);
 
   exit(EXIT_SUCCESS);
 }
diff --git a/tests/database.c b/tests/database.c
index 02c2561..7673412 100644
--- a/tests/database.c
+++ b/tests/database.c
@@ -9,7 +9,7 @@ int main(int argc, char **argv)
   char *path = "test.db";
 
   unlink(path);
-  assert(db_open(&db, path) == 1);
+  assert(imdb_open(&db, path) == 1);
 
   rec[0].num = 1;
   assert(db_rd_rec(&db, rec) == 0);
@@ -30,7 +30,7 @@ int main(int argc, char **argv)
   rec[1].num = 3;
   assert(db_rd_list(&db, rec, 2) == 1);
 
-  assert(db_close(&db) == 0);
+  assert(imdb_close(&db) == 0);
 
   return 0;
 }