diff --git a/openrct2.proj b/openrct2.proj
index 4dd7b65276..923310ff0d 100644
--- a/openrct2.proj
+++ b/openrct2.proj
@@ -18,7 +18,7 @@
   <PropertyGroup>
     <Version>0.0.5</Version>
 
-    <BUILD_SERVER Condition="'$(BUILD_SERVER)'!=''">$(COMPUTERNAME)</BUILD_SERVER>
+    <BUILD_SERVER Condition="'$(BUILD_SERVER)'==''">$(COMPUTERNAME)</BUILD_SERVER>
     <GIT_COMMIT_SHA1_SHORT Condition="'$(GIT_COMMIT_SHA1)'!=''">$(GIT_COMMIT_SHA1.Substring(0, 7))</GIT_COMMIT_SHA1_SHORT>
 
     <!-- Set dynamic OpenRCT2 #defines -->