diff --git a/src/libslic3r/ExtrusionEntity.hpp b/src/libslic3r/ExtrusionEntity.hpp
index 6238447c2c..a42fae5677 100644
--- a/src/libslic3r/ExtrusionEntity.hpp
+++ b/src/libslic3r/ExtrusionEntity.hpp
@@ -115,6 +115,19 @@ struct OverhangAttributes {
     float proximity_to_curled_lines; //value between 0 and 1
 };
 
+inline bool operator==(const OverhangAttributes &lhs, const OverhangAttributes &rhs) {
+    if (std::abs(lhs.start_distance_from_prev_layer - rhs.start_distance_from_prev_layer) > std::numeric_limits<float>::epsilon()) {
+        return false;
+    }
+    if (std::abs(lhs.end_distance_from_prev_layer - rhs.end_distance_from_prev_layer) > std::numeric_limits<float>::epsilon()) {
+        return false;
+    }
+    if (std::abs(lhs.proximity_to_curled_lines - rhs.proximity_to_curled_lines) > std::numeric_limits<float>::epsilon()) {
+        return false;
+    }
+    return true;
+}
+
 struct ExtrusionAttributes : ExtrusionFlow
 {
     ExtrusionAttributes() = default;
@@ -132,7 +145,7 @@ struct ExtrusionAttributes : ExtrusionFlow
 inline bool operator==(const ExtrusionAttributes &lhs, const ExtrusionAttributes &rhs)
 {
     return static_cast<const ExtrusionFlow&>(lhs) == static_cast<const ExtrusionFlow&>(rhs) &&
-           lhs.role == rhs.role;
+           lhs.role == rhs.role && lhs.overhang_attributes == rhs.overhang_attributes;
 }
 
 class ExtrusionPath : public ExtrusionEntity