diff --git a/Dockerfile.trunk b/Dockerfile.trunk
index 51523255dedcb6e4854210b3306c9ec8f81d4a98..4183dd75aede15b98a4d5ff5be436677747274f5 100644
--- a/Dockerfile.trunk
+++ b/Dockerfile.trunk
@@ -25,10 +25,7 @@ ARG QUASSEL_VERSION="0.13.1"
 # setup repo
 RUN mkdir /quassel && \
     git clone -b master --single-branch https://github.com/quassel/quassel /quassel/src && \
-    cd /quassel/src && \
-    if [ ! -z "$QUASSEL_VERSION" ]; then \
-      git checkout $QUASSEL_VERSION; \
-    fi
+    cd /quassel/src
 
 # generate build files
 RUN mkdir /quassel/build && \
diff --git a/Dockerfile.v0.13 b/Dockerfile.v0.13
index 94f1c4a304dba2c0a71e617866cc5060940f8e87..0cd6252b6c820f5872f28efe3984e728a1e738f2 100644
--- a/Dockerfile.v0.13
+++ b/Dockerfile.v0.13
@@ -27,9 +27,7 @@ ARG QUASSEL_VERSION="0.13.1"
 RUN mkdir /quassel && \
     git clone -b 0.13 --single-branch https://github.com/quassel/quassel /quassel/src && \
     cd /quassel/src && \
-    if [ ! -z "$QUASSEL_VERSION" ]; then \
-      git checkout $QUASSEL_VERSION; \
-    fi
+    git checkout $QUASSEL_VERSION
 
 # generate build files
 RUN mkdir /quassel/build && \