diff --git a/src/preserves/preserves_schema_nim.nim b/src/preserves/preserves_schema_nim.nim
index 2fd23c1..ca00948 100644
--- a/src/preserves/preserves_schema_nim.nim
+++ b/src/preserves/preserves_schema_nim.nim
@@ -136,7 +136,7 @@ proc hasEmbeddedType(scm: Schema): bool =
 proc embeddedIdentString(scm: Schema): string =
   case scm.data.embeddedType.orKind
   of EmbeddedtypenameKind.false:
-    raiseAssert "no embedded type for this module"
+    "E"
   of EmbeddedtypenameKind.Ref:
     doAssert $scm.data.embeddedType.ref.name != ""
     $scm.data.embeddedType.ref.name