diff --git a/CHANGELOG.md b/CHANGELOG.md
index eb315fcc6..dd9f43ef8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -34,6 +34,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 - A possible database migration issue from GVMd-7 to GVMd-8 has been addressed [#742](https://github.com/greenbone/gvmd/pull/742)
 - Fix escaping that was preventing start_task from running [#758](https://github.com/greenbone/gvmd/pull/758)
 - Fix array index error when modifying roles and groups [#763](https://github.com/greenbone/gvmd/pull/763)
+- Fix percent sign escaping in report_port_count [#781](https://github.com/greenbone/gvmd/pull/781)
 
 ### Removed
 
diff --git a/src/manage_sql.c b/src/manage_sql.c
index 9bc68e918..91a17da5e 100644
--- a/src/manage_sql.c
+++ b/src/manage_sql.c
@@ -28575,7 +28575,7 @@ report_port_count (report_t report)
 {
   return sql_int ("SELECT count (DISTINCT port) FROM results"
                   " WHERE report = %llu AND port != ''"
-                  "  AND port NOT %s 'general/%';",
+                  "  AND port NOT %s 'general/%%';",
                   report,
                   sql_ilike_op ());
 }