diff --git a/glfw/linux_joystick.c b/glfw/linux_joystick.c
index c1a1d00c8..d40bf0233 100644
--- a/glfw/linux_joystick.c
+++ b/glfw/linux_joystick.c
@@ -315,7 +315,7 @@ bool _glfwInitJoysticksLinux(void)
 
     // Continue with no joysticks if enumeration fails
 
-    qsort(_glfw.joysticks, count, sizeof(_GLFWjoystick), compareJoysticks);
+    qsort(_glfw.joysticks, count, sizeof(_glfw.joysticks[0]), compareJoysticks);
     return true;
 }
 
diff --git a/glfw/monitor.c b/glfw/monitor.c
index eb72afb58..7b01b3706 100644
--- a/glfw/monitor.c
+++ b/glfw/monitor.c
@@ -74,7 +74,7 @@ static bool refreshVideoModes(_GLFWmonitor* monitor)
     if (!modes)
         return false;
 
-    qsort(modes, modeCount, sizeof(GLFWvidmode), compareVideoModes);
+    qsort(modes, modeCount, sizeof(modes[0]), compareVideoModes);
 
     free(monitor->modes);
     monitor->modes = modes;
diff --git a/kitty/graphics.c b/kitty/graphics.c
index 74fcf29a8..49cb1d743 100644
--- a/kitty/graphics.c
+++ b/kitty/graphics.c
@@ -131,7 +131,7 @@ apply_storage_quota(GraphicsManager *self, size_t storage_limit, id_type current
     remove_images(self, trim_predicate, currently_added_image_internal_id);
     if (self->used_storage < storage_limit) return;
 
-    qsort(self->images, self->image_count, sizeof(Image), oldest_last);
+    qsort(self->images, self->image_count, sizeof(self->images[0]), oldest_last);
     while (self->used_storage > storage_limit && self->image_count > 0) {
         remove_image(self, self->image_count - 1);
     }
@@ -576,7 +576,7 @@ grman_update_layers(GraphicsManager *self, unsigned int scrolled_by, float scree
     }}
     if (!self->count) return false;
     // Sort visible refs in draw order (z-index, img)
-    qsort(self->render_data, self->count, sizeof(ImageRenderData), cmp_by_zindex_and_image);
+    qsort(self->render_data, self->count, sizeof(self->render_data[0]), cmp_by_zindex_and_image);
     // Calculate the group counts
     i = 0;
     while (i < self->count) {