diff --git a/common/plugins/altium/altium_parser_utils.cpp b/common/plugins/altium/altium_parser_utils.cpp
index db0e446f02..be09de90e2 100644
--- a/common/plugins/altium/altium_parser_utils.cpp
+++ b/common/plugins/altium/altium_parser_utils.cpp
@@ -30,9 +30,10 @@
 
 LIB_ID AltiumToKiCadLibID( const wxString& aLibName, const wxString& aLibReference )
 {
+    wxString libName = LIB_ID::FixIllegalChars( aLibName, true );
     wxString libReference = EscapeString( aLibReference, CTX_LIBID );
 
-    wxString key = !aLibName.empty() ? ( aLibName + ":" + libReference ) : libReference;
+    wxString key = !libName.empty() ? ( libName + ":" + libReference ) : libReference;
 
     LIB_ID libId;
     libId.Parse( key, true );