diff --git a/CHANGELOG.md b/CHANGELOG.md
index d3608d6a9..53e282653 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,7 @@
 - Format dates in item lists ([#1707](../../pull/1707))
 - Guard dtype types ([#1711](../../pull/1711), [#1714](../../pull/1714), [#1716](../../pull/1716))
 - Better handle IndicaLabs tiff files ([#1717](../../pull/1717))
+- Better detect files with geotransform data that aren't geospatial ([#1718](../../pull/1718))
 
 ### Changes
 
diff --git a/sources/gdal/large_image_source_gdal/__init__.py b/sources/gdal/large_image_source_gdal/__init__.py
index 2033eeb5e..25c99d7ae 100644
--- a/sources/gdal/large_image_source_gdal/__init__.py
+++ b/sources/gdal/large_image_source_gdal/__init__.py
@@ -979,7 +979,13 @@ def isGeospatial(path):
             if ds.GetProjection():
                 return True
             if ds.GetGeoTransform(can_return_null=True):
-                return True
+                w = ds.RasterXSize
+                h = ds.RasterYSize
+                trans = ds.GetGeoTransform(can_return_null=True)
+                cornersy = [trans[3] + x * trans[4] + y * trans[5]
+                            for x, y in {(0, 0), (0, h), (w, 0), (w, h)}]
+                if min(cornersy) >= -90 and max(cornersy) <= 90:
+                    return True
             if ds.GetDriver().ShortName in {'NITF', 'netCDF'}:
                 return True
         return False