diff --git a/src/libslic3r/SupportMaterial.cpp b/src/libslic3r/SupportMaterial.cpp
index d46094f7fb..9965c499f7 100644
--- a/src/libslic3r/SupportMaterial.cpp
+++ b/src/libslic3r/SupportMaterial.cpp
@@ -1322,7 +1322,7 @@ namespace SupportMaterialInternal {
         // remove the entire bridges and only support the unsupported edges
         //FIXME the brided regions are already collected as layerm.bridged. Use it?
         for (const Surface &surface : layerm.fill_surfaces())
-            if (surface.surface_type == stBottomBridge && surface.bridge_angle < 0.0)
+            if (surface.surface_type == stBottomBridge && surface.bridge_angle >= 0.0)
                 polygons_append(bridges, surface.expolygon);
         //FIXME add the gap filled areas. Extrude the gaps with a bridge flow?
         // Remove the unsupported ends of the bridges from the bridged areas.