diff --git a/apps/pcx86/1981/visicalc/README.md b/apps/pcx86/1981/visicalc/README.md
index c796eba48..4f7e4f319 100644
--- a/apps/pcx86/1981/visicalc/README.md
+++ b/apps/pcx86/1981/visicalc/README.md
@@ -4,7 +4,7 @@ title: "VisiCalc (1981)"
 permalink: /apps/pcx86/1981/visicalc/
 machines:
   - type: pcx86
-    id: ibm5150
+    id: ibm5150-visicalc
     config: /devices/pcx86/machine/5150/mda/64kb/machine.xml
     state: /apps/pcx86/1981/visicalc/state.json
     autoMount:
@@ -18,7 +18,7 @@ machines:
 VisiCalc (1981)
 ---------------
 
-{% include machine.html id="ibm5150" %}
+{% include machine.html id="ibm5150-visicalc" %}
 
 VisiCalc Reference
 ------------------