diff --git a/src/common.jl b/src/common.jl
index dd5cf3e..a4effd3 100644
--- a/src/common.jl
+++ b/src/common.jl
@@ -10,7 +10,7 @@ This is provided by World Magnetic Model
 const POLELATLONG =
     try
         let
-            if !isdefined(Base, :DelimitedFiles)
+            if !isdefined(Base, :DataFmt)
                 using DelimitedFiles
             end
             local polelatlong, rows, floattype, temp