diff --git a/pkg/gpxsee.nsi b/pkg/gpxsee.nsi
index 2b8ba45d..91bd5a9d 100644
--- a/pkg/gpxsee.nsi
+++ b/pkg/gpxsee.nsi
@@ -174,7 +174,7 @@ Section "MSVC runtime" SEC_MSVC
   DetailPrint "Installing Visual C++ 2015 Redistributable..."
   SetOutPath $TEMP
   File "vcredist_x86.exe"
-  ExecWait '"$TEMP/vcredist_x86.exe" /install /quiet /norestart'
+  ExecWait '"$TEMP\vcredist_x86.exe" /install /quiet /norestart'
   SetOutPath $INSTDIR
 
   done:
diff --git a/pkg/gpxsee64.nsi b/pkg/gpxsee64.nsi
index 771e14a4..e591cc91 100644
--- a/pkg/gpxsee64.nsi
+++ b/pkg/gpxsee64.nsi
@@ -176,7 +176,7 @@ Section "MSVC runtime" SEC_MSVC
   DetailPrint "Installing Visual C++ 2015 Redistributable..."
   SetOutPath $TEMP
   File "vcredist_x64.exe"
-  ExecWait '"$TEMP/vcredist_x64.exe" /install /quiet /norestart'
+  ExecWait '"$TEMP\vcredist_x64.exe" /install /quiet /norestart'
   SetOutPath $INSTDIR
 
   done: