diff --git a/include/ovni.h.in b/include/ovni.h.in
index ca371bb..0047280 100644
--- a/include/ovni.h.in
+++ b/include/ovni.h.in
@@ -28,7 +28,6 @@ extern "C" {
 
 #define OVNI_STREAM_MAGIC "ovni"
 #define OVNI_STREAM_VERSION 1
-#define OVNI_MODEL_VERSION "O1 V1 T1 M1 D1 K1 61"
 
 #define OVNI_STREAM_EXT ".obs"
 
diff --git a/src/rt/ovni.c b/src/rt/ovni.c
index 3978daa..0900013 100644
--- a/src/rt/ovni.c
+++ b/src/rt/ovni.c
@@ -229,9 +229,6 @@ proc_set_version(void)
 
 	if (json_object_set_number(meta, "version", OVNI_METADATA_VERSION) != 0)
 		die("json_object_set_number for version failed");
-
-	if (json_object_set_string(meta, "model_version", OVNI_MODEL_VERSION) != 0)
-		die("json_object_set_string for model_version failed");
 }
 
 void