diff --git a/examples/optimum_speed_altitude.py b/examples/optimum_speed_altitude.py
index 5e35e3a..3564dc2 100644
--- a/examples/optimum_speed_altitude.py
+++ b/examples/optimum_speed_altitude.py
@@ -13,11 +13,11 @@
 from pyBADA.bada4 import Parser as Bada4Parser
 from pyBADA.badaH import Parser as BadaHParser
 
-# initialization of BADA3, BADA4 and BADAH
-# uncomment for testing different BADA family if available
 badaVersion = "DUMMY"
-AC = BadaHAircraft(badaVersion=badaVersion, acName="DUMH")
-# AC = Bada4Aircraft(badaVersion=badaVersion, acName='DUMMY-TWIN')
+
+# initialization of BADA4
+AC = Bada4Aircraft(badaVersion=badaVersion, acName="DUMMY-TWIN")
+print("BADA4 Optimum Speed and Altitude:")
 
 # BADA4
 if AC.BADAFamily.BADA4:
@@ -77,6 +77,9 @@
     optAlt_precomputed = AC.OPT.getOPTParam("OPTALT", M, mass)
     print("optAlt_precomputed = ", optAlt_precomputed)
 
+# initialization of BADAH
+AC = BadaHAircraft(badaVersion=badaVersion, acName="DUMH")
+print("\nBADAH Optimum Speed and Altitude:")
 
 # BADAH
 if AC.BADAFamily.BADAH:
diff --git a/src/pyBADA/bada4.py b/src/pyBADA/bada4.py
index d43c10a..2f7aabb 100644
--- a/src/pyBADA/bada4.py
+++ b/src/pyBADA/bada4.py
@@ -3801,8 +3801,6 @@ def getOPTParam(self, optParam, var_1, var_2=None):
 
         filename = os.path.join(
             self.AC.filePath,
-            "BADA4",
-            self.AC.BADAVersion,
             self.AC.acName,
             optParam + ".OPT",
         )
diff --git a/src/pyBADA/badaH.py b/src/pyBADA/badaH.py
index 90b60a3..02e3968 100644
--- a/src/pyBADA/badaH.py
+++ b/src/pyBADA/badaH.py
@@ -1215,8 +1215,6 @@ def getOPTParam(self, optParam, var_1, var_2, DeltaTemp):
 
         filename = os.path.join(
             self.AC.filePath,
-            self.AC.BADAFamilyName,
-            self.AC.BADAVersion,
             self.AC.acName,
             optParam + ".OPT",
         )