diff --git a/ArchiSteamFarm/ArchiSteamFarm.csproj b/ArchiSteamFarm/ArchiSteamFarm.csproj
index 528c431d2..d62ce9ddf 100644
--- a/ArchiSteamFarm/ArchiSteamFarm.csproj
+++ b/ArchiSteamFarm/ArchiSteamFarm.csproj
@@ -188,7 +188,7 @@
       copy "$(TargetDir)$(TargetName).exe" "$(SolutionDir)out\ASF.exe"
     </PostBuildEvent>
     <PostBuildEvent Condition=" '$(OS)' == 'Unix' AND '$(ConfigurationName)' == 'Release' ">
-      if [[ -f "$(SolutionDir)mono_envsetup.sh" ]]; then
+      if [ -f "$(SolutionDir)mono_envsetup.sh" ]; then
         source "$(SolutionDir)mono_envsetup.sh"
       fi
 
diff --git a/ConfigGenerator/ConfigGenerator.csproj b/ConfigGenerator/ConfigGenerator.csproj
index a969f1eda..6cb5b32ba 100644
--- a/ConfigGenerator/ConfigGenerator.csproj
+++ b/ConfigGenerator/ConfigGenerator.csproj
@@ -123,7 +123,7 @@
       copy "$(TargetDir)$(TargetName).exe" "$(SolutionDir)out\ASF-ConfigGenerator.exe"
     </PostBuildEvent>
     <PostBuildEvent Condition=" '$(OS)' == 'Unix' AND '$(ConfigurationName)' == 'Release' ">
-      if [[ -f "$(SolutionDir)mono_envsetup.sh" ]]; then
+      if [ -f "$(SolutionDir)mono_envsetup.sh" ]; then
         source "$(SolutionDir)mono_envsetup.sh"
       fi
 
diff --git a/GUI/GUI.csproj b/GUI/GUI.csproj
index de7143541..570633b2b 100644
--- a/GUI/GUI.csproj
+++ b/GUI/GUI.csproj
@@ -208,7 +208,7 @@
       copy "$(TargetDir)$(TargetName).exe" "$(SolutionDir)out\ASF-GUI.exe"
     </PostBuildEvent>
     <PostBuildEvent Condition=" '$(OS)' == 'Unix' AND '$(ConfigurationName)' == 'Release' ">
-      if [[ -f "$(SolutionDir)mono_envsetup.sh" ]]; then
+      if [ -f "$(SolutionDir)mono_envsetup.sh" ]; then
         source "$(SolutionDir)mono_envsetup.sh"
       fi