diff --git a/src/catch2/internal/catch_test_case_tracker.cpp b/src/catch2/internal/catch_test_case_tracker.cpp
index c48932b1..1470b91c 100644
--- a/src/catch2/internal/catch_test_case_tracker.cpp
+++ b/src/catch2/internal/catch_test_case_tracker.cpp
@@ -43,7 +43,12 @@ namespace TestCaseTracking {
             m_children.begin(),
             m_children.end(),
             [&nameAndLocation]( ITrackerPtr const& tracker ) {
-                return tracker->nameAndLocation() == nameAndLocation;
+                auto const& tnameAndLoc = tracker->nameAndLocation();
+                if ( tnameAndLoc.location.line !=
+                     nameAndLocation.location.line ) {
+                    return false;
+                }
+                return tnameAndLoc == nameAndLocation;
             } );
         return ( it != m_children.end() ) ? it->get() : nullptr;
     }
diff --git a/src/catch2/internal/catch_test_case_tracker.hpp b/src/catch2/internal/catch_test_case_tracker.hpp
index 506e42de..beff8d6d 100644
--- a/src/catch2/internal/catch_test_case_tracker.hpp
+++ b/src/catch2/internal/catch_test_case_tracker.hpp
@@ -24,8 +24,12 @@ namespace TestCaseTracking {
 
         NameAndLocation( std::string&& _name, SourceLineInfo const& _location );
         friend bool operator==(NameAndLocation const& lhs, NameAndLocation const& rhs) {
-            return lhs.name == rhs.name
-                && lhs.location == rhs.location;
+            // This is a very cheap check that should have a very high hit rate.
+            // If we get to SourceLineInfo::operator==, we will redo it, but the
+            // cost of repeating is trivial at that point (we will be paying
+            // multiple strcmp/memcmps at that point).
+            if ( lhs.location.line != rhs.location.line ) { return false; }
+            return lhs.name == rhs.name && lhs.location == rhs.location;
         }
         friend bool operator!=(NameAndLocation const& lhs,
                                NameAndLocation const& rhs) {
@@ -50,6 +54,11 @@ namespace TestCaseTracking {
 
         friend bool operator==( NameAndLocation const& lhs,
                                 NameAndLocationRef const& rhs ) {
+            // This is a very cheap check that should have a very high hit rate.
+            // If we get to SourceLineInfo::operator==, we will redo it, but the
+            // cost of repeating is trivial at that point (we will be paying
+            // multiple strcmp/memcmps at that point).
+            if ( lhs.location.line != rhs.location.line ) { return false; }
             return StringRef( lhs.name ) == rhs.name &&
                    lhs.location == rhs.location;
         }