diff --git a/build_common.ps1 b/build_common.ps1
index 44b77f6..9acca21 100644
--- a/build_common.ps1
+++ b/build_common.ps1
@@ -599,7 +599,7 @@ class BuildProject {
 		$sfMapsNames = @()
 
 		if (-not(Test-Path $contentForCookPath)) {
-			if ($sfCollectionOnlyMapsNames.Length -lt 1) {
+			if ($sfCollectionOnlyMapsNames.Length -gt 0) {
 				ThrowFailure "Collection map cooking is requested, but no ContentForCook folder is present"
 			}