diff --git a/src/input.c b/src/input.c
index e3cfed46e..098ce24eb 100644
--- a/src/input.c
+++ b/src/input.c
@@ -525,7 +525,7 @@ GLFWAPI int glfwGetMouseButton(GLFWwindow* handle, int button)
 
 
 /***************************PEN**************************************************/
-GLFWAPI int glfwGetPenPressure(GLFWwindow* handle)
+GLFWAPI double glfwGetPenPressure(GLFWwindow* handle)
 {
 	_GLFWwindow* window = (_GLFWwindow*)handle;
 	assert(window != NULL);