diff --git a/src/SystemIdentification.jl b/src/SystemIdentification.jl
index 45de469e3b6e54986ab663c34a1ed2535c0b6a37..eb88e0425e46ddc33397e64becf826ee07a70a98 100644
--- a/src/SystemIdentification.jl
+++ b/src/SystemIdentification.jl
@@ -7,7 +7,9 @@ AR,
 ARX,
 RBFARX,
 FitStatistics,
-FitResult
+FitResult,
+# Functions
+ar,arx,getARRegressor,getARXRegressor,findNa
 
 ## Fit Methods =================
 :LS