diff --git a/freqtrade/vendor/qtpylib/indicators.py b/freqtrade/vendor/qtpylib/indicators.py
index ee1f14e1f..c4b955626 100644
--- a/freqtrade/vendor/qtpylib/indicators.py
+++ b/freqtrade/vendor/qtpylib/indicators.py
@@ -248,45 +248,34 @@ def crossed_below(series1, series2):
 
 def rolling_std(series, window=200, min_periods=None):
     min_periods = window if min_periods is None else min_periods
-    try:
-        if min_periods == window:
-            return numpy_rolling_std(series, window, True)
-        else:
-            try:
-                return series.rolling(window=window, min_periods=min_periods).std()
-            except BaseException:
-                return pd.Series(series).rolling(window=window, min_periods=min_periods).std()
-    except BaseException:
-        return pd.rolling_std(series, window=window, min_periods=min_periods)
-
+    if min_periods == window and len(series) > window:
+        return numpy_rolling_std(series, window, True)
+    else:
+        try:
+            return series.rolling(window=window, min_periods=min_periods).std()
+        except BaseException:
+            return pd.Series(series).rolling(window=window, min_periods=min_periods).std()
 
 # ---------------------------------------------
 
 def rolling_mean(series, window=200, min_periods=None):
     min_periods = window if min_periods is None else min_periods
-    try:
-        if min_periods == window:
-            return numpy_rolling_mean(series, window, True)
-        else:
-            try:
-                return series.rolling(window=window, min_periods=min_periods).mean()
-            except BaseException:
-                return pd.Series(series).rolling(window=window, min_periods=min_periods).mean()
-    except BaseException:
-        return pd.rolling_mean(series, window=window, min_periods=min_periods)
-
+    if min_periods == window and len(series) > window:
+        return numpy_rolling_mean(series, window, True)
+    else:
+        try:
+            return series.rolling(window=window, min_periods=min_periods).mean()
+        except BaseException:
+            return pd.Series(series).rolling(window=window, min_periods=min_periods).mean()
 
 # ---------------------------------------------
 
 def rolling_min(series, window=14, min_periods=None):
     min_periods = window if min_periods is None else min_periods
     try:
-        try:
-            return series.rolling(window=window, min_periods=min_periods).min()
-        except BaseException:
-            return pd.Series(series).rolling(window=window, min_periods=min_periods).min()
+        return series.rolling(window=window, min_periods=min_periods).min()
     except BaseException:
-        return pd.rolling_min(series, window=window, min_periods=min_periods)
+        return pd.Series(series).rolling(window=window, min_periods=min_periods).min()
 
 
 # ---------------------------------------------
@@ -294,12 +283,9 @@ def rolling_min(series, window=14, min_periods=None):
 def rolling_max(series, window=14, min_periods=None):
     min_periods = window if min_periods is None else min_periods
     try:
-        try:
-            return series.rolling(window=window, min_periods=min_periods).min()
-        except BaseException:
-            return pd.Series(series).rolling(window=window, min_periods=min_periods).min()
+        return series.rolling(window=window, min_periods=min_periods).min()
     except BaseException:
-        return pd.rolling_min(series, window=window, min_periods=min_periods)
+        return pd.Series(series).rolling(window=window, min_periods=min_periods).min()
 
 
 # ---------------------------------------------