Index: source/gui/ObjectTypes/CMiniMap.cpp
===================================================================
--- source/gui/ObjectTypes/CMiniMap.cpp
+++ source/gui/ObjectTypes/CMiniMap.cpp
@@ -261,7 +261,10 @@
 float CMiniMap::GetAngle() const
 {
 	CVector3D cameraIn = g_Game->GetView()->GetCamera()->GetOrientation().GetIn();
-	return -atan2(cameraIn.X, cameraIn.Z);
+	float cameraZ = cameraIn.Z;
+	if (std::signbit(cameraZ))
+		cameraZ = 0.0f;
+	return -atan2(cameraIn.X, cameraZ);
 }
 
 CVector2D CMiniMap::WorldSpaceToMiniMapSpace(const CVector3D& worldPosition) const