diff --git a/demo_r1/mainicon.rc b/demo_r1/mainicon.rc
index 83c0128..ef4125c 100644
--- a/demo_r1/mainicon.rc
+++ b/demo_r1/mainicon.rc
@@ -1 +1 @@
-DI_ICON1               ICON                    "main.ico"
+IDI_ICON1               ICON                    "main.ico"
diff --git a/demo_r2/mainicon.rc b/demo_r2/mainicon.rc
index 83c0128..ef4125c 100644
--- a/demo_r2/mainicon.rc
+++ b/demo_r2/mainicon.rc
@@ -1 +1 @@
-DI_ICON1               ICON                    "main.ico"
+IDI_ICON1               ICON                    "main.ico"
diff --git a/designer/mainicon.rc b/designer/mainicon.rc
index 83c0128..ef4125c 100644
--- a/designer/mainicon.rc
+++ b/designer/mainicon.rc
@@ -1 +1 @@
-DI_ICON1               ICON                    "main.ico"
+IDI_ICON1               ICON                    "main.ico"