diff --git a/scripts/appveyor/config.cmd b/scripts/appveyor/config.cmd
index 6e287bc665..d7e898ed4a 100644
--- a/scripts/appveyor/config.cmd
+++ b/scripts/appveyor/config.cmd
@@ -26,6 +26,7 @@ cmake -G "NMake Makefiles" ^
     -DBUILD_PLUGIN_PCL=OFF ^
     -DBUILD_PLUGIN_PGPOINTCLOUD=%PDAL_OPTIONAL_COMPONENTS% ^
     -DBUILD_PLUGIN_SQLITE=%PDAL_OPTIONAL_COMPONENTS% ^
+    -DBUILD_PLUGIN_I3S=%PDAL_OPTIONAL_COMPONENTS% ^
     -DLIBLZMA_LIBRARY=%OSGEO4W_ROOT%\lib\liblzma.lib ^
     -DBUILD_PLUGIN_RIVLIB=OFF ^
     -DBUILD_PLUGIN_PYTHON=%PDAL_OPTIONAL_COMPONENTS% ^