diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index 6c907c4282b96b2085fae53b6c5b85d21df81e4a..f30219dfb451af074a8996cbf0b65871883213bb 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -28,6 +28,7 @@ virBufferEscapeString;
 virBufferFreeAndReset;
 virBufferGetIndent;
 virBufferStrcat;
+virBufferTrim;
 virBufferURIEncodeString;
 virBufferUse;
 virBufferVasprintf;