diff --git a/build.sh b/build.sh
index 02405e2ee..c2a9e8967 100755
--- a/build.sh
+++ b/build.sh
@@ -7,17 +7,17 @@ IFS=$'\n\t'
 
 if [ -z "${ANDROID_SDK_ROOT:-}" ]; then
   echo "ANDROID_SDK_ROOT is not set, setting to $HOME/Android/Sdk";
-  ANDROID_SDK_ROOT=$HOME/Android/Sdk
+  export ANDROID_SDK_ROOT=$HOME/Android/Sdk
 fi
 
 if [ -z "${JAVA_HOME:-}" ]; then
   echo "JAVA_HOME is not set, setting to Java 11 (like F-Droid)"
   if [ -f "/etc/debian_version" ]; then
     echo "Debian-based distro, Java 11 is /usr/lib/jvm/java-11-openjdk-amd64"
-    JAVA_HOME=/usr/lib/jvm/java-11-openjdk-amd64
+    export JAVA_HOME=/usr/lib/jvm/java-11-openjdk-amd64
   else
     echo "Not Debian-based, assuming Fedora and setting Java 11 as /usr/lib/jvm/java-11-openjdk"
-    JAVA_HOME=/usr/lib/jvm/java-11-openjdk
+    export JAVA_HOME=/usr/lib/jvm/java-11-openjdk
   fi
 fi
 
diff --git a/docs/README.md b/docs/README.md
index 6babf994f..701825de9 100644
--- a/docs/README.md
+++ b/docs/README.md
@@ -67,7 +67,7 @@ Build without signing:
 
 Build with signing:
 ```
-KEYSTORE=/path/to/keystore $KEYSTORE_ALIAS=catima ./build.sh
+KEYSTORE=/path/to/keystore KEYSTORE_ALIAS=catima ./build.sh
 ```
 
 # Translating