diff --git a/src/Surface.zig b/src/Surface.zig
index 4d66622..c0fe19e 100644
--- a/src/Surface.zig
+++ b/src/Surface.zig
@@ -3430,7 +3430,7 @@ pub fn scrollCallback(
         }
 
         // We scroll by the number of rows in the offset and save the remainder
-        const amount = poff / cell_size;
+        const amount = @trunc(poff / cell_size);
         assert(@abs(amount) >= 1);
         self.mouse.pending_scroll_y = poff - (amount * cell_size);
 
@@ -3455,7 +3455,7 @@ pub fn scrollCallback(
             break :x .{};
         }
 
-        const amount = poff / cell_size;
+        const amount = @trunc(poff / cell_size);
         assert(@abs(amount) >= 1);
         self.mouse.pending_scroll_x = poff - (amount * cell_size);
         const delta: isize = @intFromFloat(@trunc(amount));