diff --git a/src/include/PTheory.h b/src/include/PTheory.h
index d873c62d..a242391f 100644
--- a/src/include/PTheory.h
+++ b/src/include/PTheory.h
@@ -207,7 +207,7 @@ static PTheoDataBase fgTheoDataBase[THEORY_MAX] = {
    "TFieldCos", "tf", "(phase frequency)", "(phase frequency tshift)"},
 
   {THEORY_INTERNAL_FIELD, THEORY_PARAM_INTERNAL_FIELD, false,
-   "internFld", "if", "(fraction phase frequency Trate Lrate)", "(fraction phase frequency Trate Lrate tshift)"},
+   "internFld", "ifld", "(fraction phase frequency Trate Lrate)", "(fraction phase frequency Trate Lrate tshift)"},
 
   {THEORY_INTERNAL_FIELD_KORNILOV, THEORY_PARAM_INTERNAL_FIELD_KORNILOV, false,
    "internFldGK", "ifgk", "(fraction frequency sigma lambda beta)", "(fraction frequency sigma lambda beta tshift)"},