diff --git a/common/map_view.cpp b/common/map_view.cpp
index de31c1fa0..8b913cd0c 100644
--- a/common/map_view.cpp
+++ b/common/map_view.cpp
@@ -136,10 +136,7 @@ public:
 
         if (button == GLFW_MOUSE_BUTTON_RIGHT || (button == GLFW_MOUSE_BUTTON_LEFT && modifiers & GLFW_MOD_CONTROL)) {
             mapView->rotating = action == GLFW_PRESS;
-            if (mapView->rotating) {
-                mapView->start_x = mapView->last_x;
-                mapView->start_y = mapView->last_y;
-            } else {
+            if (!mapView->rotating) {
                 mapView->map.stopRotating();
             }
         } else if (button == GLFW_MOUSE_BUTTON_LEFT) {
@@ -167,7 +164,7 @@ public:
             }
         } else if (mapView->rotating) {
             mapView->map.startRotating();
-            mapView->map.rotateBy(mapView->start_x, mapView->start_y, mapView->last_x, mapView->last_y, x, y);
+            mapView->map.rotateBy(mapView->last_x, mapView->last_y, x, y);
         }
         mapView->last_x = x;
         mapView->last_y = y;
@@ -222,7 +219,6 @@ public:
     double last_x = 0, last_y = 0;
     bool tracking = false;
 
-    double start_x = 0, start_y = 0;
     bool rotating = false;
 
     double last_click = -1;
diff --git a/include/llmr/map/map.hpp b/include/llmr/map/map.hpp
index 8e94d0726..0b87c7ae6 100644
--- a/include/llmr/map/map.hpp
+++ b/include/llmr/map/map.hpp
@@ -57,7 +57,7 @@ public:
     void stopScaling();
 
     /* rotation */
-    void rotateBy(double cx, double cy, double sx, double sy, double ex, double ey, double duration = 0);
+    void rotateBy(double sx, double sy, double ex, double ey, double duration = 0);
     void setAngle(double angle, double cx = -1, double cy = -1, double duration = 0);
     double getAngle() const;
     void resetNorth();
diff --git a/include/llmr/map/transform.hpp b/include/llmr/map/transform.hpp
index e81b9e412..6cf0295ef 100644
--- a/include/llmr/map/transform.hpp
+++ b/include/llmr/map/transform.hpp
@@ -29,7 +29,7 @@ public:
     // Relative changes
     void moveBy(double dx, double dy, double duration = 0);
     void scaleBy(double ds, double cx = -1, double cy = -1, double duration = 0);
-    void rotateBy(double cx, double cy, double sx, double sy, double ex, double ey, double duration = 0);
+    void rotateBy(double sx, double sy, double ex, double ey, double duration = 0);
 
     // Absolute changes
     void setScale(double scale, double cx = -1, double cy = -1, double duration = 0);
diff --git a/src/map/map.cpp b/src/map/map.cpp
index c0bdba287..b85d56b8e 100644
--- a/src/map/map.cpp
+++ b/src/map/map.cpp
@@ -137,8 +137,8 @@ void Map::stopScaling() {
     platform::restart();
 }
 
-void Map::rotateBy(double cx, double cy, double sx, double sy, double ex, double ey, double duration) {
-    transform.rotateBy(cx, cy, sx, sy, ex, ey, duration);
+void Map::rotateBy(double sx, double sy, double ex, double ey, double duration) {
+    transform.rotateBy(sx, sy, ex, ey, duration);
     update();
 
     settings.angle = transform.getAngle();
diff --git a/src/map/transform.cpp b/src/map/transform.cpp
index 545de6e80..5dfd8c089 100644
--- a/src/map/transform.cpp
+++ b/src/map/transform.cpp
@@ -107,7 +107,7 @@ void Transform::stopScaling() {
     }
 }
 
-void Transform::rotateBy(double anchor_x, double anchor_y, double start_x, double start_y, double end_x, double end_y, double duration) {
+void Transform::rotateBy(double start_x, double start_y, double end_x, double end_y, double duration) {
     double center_x = width / 2, center_y = height / 2;
 
     const double begin_center_x = start_x - center_x;