diff --git a/ringfs.c b/ringfs.c
index a52baba..ad222da 100644
--- a/ringfs.c
+++ b/ringfs.c
@@ -141,7 +141,7 @@ static void _loc_advance_slot(struct ringfs *fs, struct ringfs_loc *loc)
 
 /* And here we go. */
 
-int ringfs_init(struct ringfs *fs, struct ringfs_flash_partition *flash, uint32_t version, int object_size)
+void ringfs_init(struct ringfs *fs, struct ringfs_flash_partition *flash, uint32_t version, int object_size)
 {
     /* Copy arguments to instance. */
     fs->flash = flash;
@@ -151,8 +151,6 @@ int ringfs_init(struct ringfs *fs, struct ringfs_flash_partition *flash, uint32_
     /* Precalculate commonly used values. */
     fs->slots_per_sector = (fs->flash->sector_size - sizeof(struct sector_header)) /
                            (sizeof(struct slot_header) + fs->object_size);
-
-    return 0;
 }
 
 int ringfs_format(struct ringfs *fs)
diff --git a/ringfs.h b/ringfs.h
index f998aca..dcce385 100644
--- a/ringfs.h
+++ b/ringfs.h
@@ -84,9 +84,8 @@ struct ringfs {
  * @param version Object version. Should be incremented whenever the object's
  *                semantics or size change in a backwards-incompatible way.
  * @param object_size Size of one stored object, in bytes.
- * @returns Zero on success, -1 on failure.
  */
-int ringfs_init(struct ringfs *fs, struct ringfs_flash_partition *flash, uint32_t version, int object_size);
+void ringfs_init(struct ringfs *fs, struct ringfs_flash_partition *flash, uint32_t version, int object_size);
 
 /**
  * Format the flash memory.
diff --git a/tests/pyringfs.py b/tests/pyringfs.py
index abcd4ab..a0aa8e8 100755
--- a/tests/pyringfs.py
+++ b/tests/pyringfs.py
@@ -47,7 +47,7 @@ class StructRingFS(Structure):
 class libringfs(GenericLibrary):
     dllname = './ringfs.so'
     functions = [
-        ['ringfs_init', [POINTER(StructRingFS), POINTER(StructRingFSFlashPartition), c_uint32, c_int], c_int],
+        ['ringfs_init', [POINTER(StructRingFS), POINTER(StructRingFSFlashPartition), c_uint32, c_int], None],
         ['ringfs_format', [POINTER(StructRingFS)], c_int],
         ['ringfs_scan', [POINTER(StructRingFS)], c_int],
         ['ringfs_capacity', [POINTER(StructRingFS)], c_int],