diff --git a/stm32f103t8u6/build_number.txt b/stm32f103t8u6/build_number.txt
index 55bd0ac..f59a90f 100644
--- a/stm32f103t8u6/build_number.txt
+++ b/stm32f103t8u6/build_number.txt
@@ -1 +1 @@
-333
+337
diff --git a/stm32f103t8u6/src/pwm_output.c b/stm32f103t8u6/src/pwm_output.c
index 985bc69..6aa5898 100644
--- a/stm32f103t8u6/src/pwm_output.c
+++ b/stm32f103t8u6/src/pwm_output.c
@@ -197,11 +197,15 @@ void Output_Tick(void)
             Output_CurrentLinePosition += step_length;
             unsigned int remaining = Output_CurrentLineLength
                 - Output_CurrentLinePosition;
-            position.x = (Output_CurrentLineEnd.x * Output_CurrentLinePosition
-                    + Output_CurrentLineStart.x * remaining)
+            position.x = ((long long)Output_CurrentLineEnd.x
+                        * Output_CurrentLinePosition
+                    + (long long)Output_CurrentLineStart.x
+                        * remaining)
                 / Output_CurrentLineLength;
-            position.y = (Output_CurrentLineEnd.y * Output_CurrentLinePosition
-                    + Output_CurrentLineStart.y * remaining)
+            position.y = ((long long)Output_CurrentLineEnd.y
+                        * Output_CurrentLinePosition
+                    + (long long)Output_CurrentLineStart.y
+                        * remaining)
                 / Output_CurrentLineLength;
             break;
         }