diff --git a/buildSFML.ps1 b/buildSFML.ps1
index 2626a3e..d1e7a2c 100644
--- a/buildSFML.ps1
+++ b/buildSFML.ps1
@@ -1,6 +1,6 @@
 cd deps/SFML
 
-if ($env:APPVEYOR = ="") {
+if ($env:APPVEYOR -like "") {
     cmake.exe -S . -B out/Debug -DCMAKE_BUILD_TYPE=Debug
     cmake.exe --build out/Debug --config Debug
 }