diff --git a/src/m64py/ui/inputbutton.py b/src/m64py/ui/inputbutton.py
index 2c3b451..c5516f7 100644
--- a/src/m64py/ui/inputbutton.py
+++ b/src/m64py/ui/inputbutton.py
@@ -100,8 +100,10 @@ class InputButton(QPushButton):
             self.clearFocus()
 
     def on_axis_value_changed(self, axis, value):
-        val = "-" if value < 0 else "+"
-        self.on_joystick_event("axis", axis, val)
+        # SDL axes range from -32768 to 32767. Only map axes which are half-pressed or more.
+        if abs(value) >= 16384:
+            val = "-" if value < 0 else "+"
+            self.on_joystick_event("axis", axis, val)
 
     def on_button_value_changed(self, button, value):
         if value: