diff --git a/src/input.c b/src/input.c
index de4ed793..85982419 100644
--- a/src/input.c
+++ b/src/input.c
@@ -154,9 +154,6 @@ void _glfwInputKey(_GLFWwindow* window, int key, int scancode, int action, int m
 
 void _glfwInputChar(_GLFWwindow* window, unsigned int character)
 {
-    if (character == -1)
-        return;
-
     if (character < 32 || (character > 126 && character < 160))
         return;
 
diff --git a/src/x11_window.c b/src/x11_window.c
index 72c79ab1..604b3077 100644
--- a/src/x11_window.c
+++ b/src/x11_window.c
@@ -520,7 +520,11 @@ static void processEvent(XEvent *event)
             _glfwInputKey(window, key, event->xkey.keycode, GLFW_PRESS, mods);
 
             if (!(mods & GLFW_MOD_CONTROL) && !(mods & GLFW_MOD_ALT))
-                _glfwInputChar(window, translateChar(&event->xkey));
+            {
+                const int character = translateChar(&event->xkey);
+                if (character != -1)
+                    _glfwInputChar(window, character);
+            }
 
             break;
         }