diff --git a/CHANGELOG.md b/CHANGELOG.md
index 463ccbaa40..be3b8d4eee 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -44,6 +44,7 @@ release.
 - Fixed a bug in PolygonTools in which the program exited before attempting to fix an invalid Polygon [#5520](https://github.com/DOI-USGS/ISIS3/issues/5520)
 - Fixed a bug in QVIEW's Stretch tool where the default min/max type was not an available option [#5289](https://github.com/DOI-USGS/ISIS3/issues/5289)
 - Fixed a bug in QVIEW where images would double load if loaded from the commandline [#5505](https://github.com/DOI-USGS/ISIS3/pull/5505)
+- Fixed qmos segfault under GEOS 3.12 [#5539](https://github.com/DOI-USGS/ISIS3/issues/5539)
 
 ### Added
 - Added versioned default values to lrowacphomap's PHOALGO and PHOPARCUBE parameters and updated lrowacphomap to handle them properly. [#5452](https://github.com/DOI-USGS/ISIS3/pull/5452)
diff --git a/isis/src/base/objs/PolygonTools/PolygonTools.cpp b/isis/src/base/objs/PolygonTools/PolygonTools.cpp
index 0d9fe5f9a2..dc7431db56 100644
--- a/isis/src/base/objs/PolygonTools/PolygonTools.cpp
+++ b/isis/src/base/objs/PolygonTools/PolygonTools.cpp
@@ -586,6 +586,7 @@ namespace Isis {
       delete the180Polys;
       the180Polys = NULL;
 
+      result->normalize();
       geos::geom::MultiPolygon *fixedResult = FixSeam(result);
       delete result;
       result = NULL;