diff --git a/tests/physics/src/BulletTestUtils.h b/tests/physics/src/BulletTestUtils.h
index 01a4fd5973..9166f80ba1 100644
--- a/tests/physics/src/BulletTestUtils.h
+++ b/tests/physics/src/BulletTestUtils.h
@@ -23,10 +23,6 @@
 //      (used by QCOMPARE_WITH_RELATIVE_ERROR via QCOMPARE_WITH_LAMBDA)
 //      (this is only used by btMatrix3x3 in MeshMassPropertiesTests.cpp, so it's only defined for the Mat3 type)
 
-// Return the error between values a and b; used to implement QCOMPARE_WITH_ABS_ERROR
-inline btScalar getErrorDifference(const btScalar& a, const btScalar& b) {
-    return fabs(a - b);
-}
 // Return the error between values a and b; used to implement QCOMPARE_WITH_ABS_ERROR
 inline btScalar getErrorDifference(const btVector3& a, const btVector3& b) {
     return (a - b).length();