diff --git a/src/plugins/ole2_extractor.c b/src/plugins/ole2_extractor.c
index 072ffc5..a105840 100644
--- a/src/plugins/ole2_extractor.c
+++ b/src/plugins/ole2_extractor.c
@@ -345,9 +345,8 @@ process_star_office (GsfInput *src,
     gsf_input_read (src, size, (unsigned char*) buf);
     if ( (buf[0] != 0x0F) ||
 	 (buf[1] != 0x0) ||
-	 (0 != strncmp (&buf[2],
-			"SfxDocumentInfo",
-			strlen ("SfxDocumentInfo"))) ||
+	 (0 != strcmp (&buf[2],
+			"SfxDocumentInfo")) ||
 	 (buf[0x11] != 0x0B) ||
 	 (buf[0x13] != 0x00) || /* pw protected! */
 	 (buf[0x12] != 0x00) )