diff --git a/src/printer_yin.c b/src/printer_yin.c
index cb01c21..c3a31a6 100644
--- a/src/printer_yin.c
+++ b/src/printer_yin.c
@@ -1283,7 +1283,9 @@
     LY_ARRAY_COUNT_TYPE u;
 
     LY_ARRAY_FOR(modp->imports, u){
-        ly_print_(pctx->out, "\n%*sxmlns:%s=\"%s\"", indent + INDENT, modp->imports[u].prefix, modp->imports[u].module->ns);
+        if (!(modp->imports[u].flags & LYS_INTERNAL)) {
+            ly_print_(pctx->out, "\n%*sxmlns:%s=\"%s\"", indent + INDENT, modp->imports[u].prefix, modp->imports[u].module->ns);
+        }
     }
 }