diff --git a/config.proto b/config.proto
index 4a024a9..f9b8a51 100644
--- a/config.proto
+++ b/config.proto
@@ -89,7 +89,7 @@ message Config {
       /*
        * Include geoidal separation
        */
-      GEOIDAL_SEPERATION   = 0x0004;
+      GEOIDAL_SEPARATION   = 0x0004;
     
       /*
        * Include the DOP value ; PDOP used by default, see below
diff --git a/mesh.proto b/mesh.proto
index 7cbd407..23a5879 100644
--- a/mesh.proto
+++ b/mesh.proto
@@ -126,7 +126,7 @@ message Position {
   /*
    * Geoidal separation in meters
    */
-  sint32 altitude_geoidal_seperation = 10;
+  sint32 altitude_geoidal_separation = 10;
 
   /*
    * Horizontal, Vertical and Position Dilution of Precision, in 1/100 units