diff --git a/contrib/build-linux/appimage/README.md b/contrib/build-linux/appimage/README.md
index 6f6be280a..b4c8f8faa 100644
--- a/contrib/build-linux/appimage/README.md
+++ b/contrib/build-linux/appimage/README.md
@@ -25,7 +25,7 @@ see [issue #5159](https://github.com/spesmilo/electrum/issues/5159).
 2. Build image
 
     ```
-    $ sudo docker build --no-cache -t electrum-appimage-builder-img contrib/build-linux/appimage
+    $ sudo docker build -t electrum-appimage-builder-img contrib/build-linux/appimage
     ```
 
 3. Build binary
diff --git a/contrib/build-wine/README.md b/contrib/build-wine/README.md
index 9c6cb1d7b..218b3aee8 100644
--- a/contrib/build-wine/README.md
+++ b/contrib/build-wine/README.md
@@ -32,7 +32,7 @@ folder.
 
     ```
     $ FRESH_CLONE=contrib/build-wine/fresh_clone && \
-        rm -rf $FRESH_CLONE && \
+        sudo rm -rf $FRESH_CLONE && \
         mkdir -p $FRESH_CLONE && \
         cd $FRESH_CLONE  && \
         git clone https://github.com/spesmilo/electrum.git && \