diff --git a/aegisub/src/dialog_colorpicker.cpp b/aegisub/src/dialog_colorpicker.cpp
index 7b8986df0..851c6c823 100644
--- a/aegisub/src/dialog_colorpicker.cpp
+++ b/aegisub/src/dialog_colorpicker.cpp
@@ -688,6 +688,10 @@ DialogColorPicker::~DialogColorPicker()
 	delete rgb_slider[2];
 	delete hsl_slider;
 	delete hsv_slider;
+
+#ifdef __WXMSW__
+	if (screen_dropper_icon->HasCapture()) screen_dropper_icon->ReleaseMouse();
+#endif
 }