diff --git a/src/CLI.f90 b/src/CLI.f90
index cabec731f..0d60daf45 100644
--- a/src/CLI.f90
+++ b/src/CLI.f90
@@ -153,7 +153,7 @@ subroutine CLI_init()
         loadCaseArg = getArg(i+1)
       case ('-g', '--geom', '--geometry')
         geometryArg = getArg(i+1)
-      case ('-m', '--material', '--materialConfig')
+      case ('-m', '--material', '--materialconfig')
         materialArg = getArg(i+1)
       case ('-w', '--wd', '--workingdir', '--workingdirectory')
         workingDirArg = getArg(i+1)