diff --git a/install.sh b/install.sh
index 15da7fa..03e5f86 100644
--- a/install.sh
+++ b/install.sh
@@ -18,28 +18,28 @@ COMON_INSTALL_PATHS="$HOME/.local/bin $HOME/.bin $HOME/bin"
 
 INSTALL_PATH=""
 for p in $COMON_INSTALL_PATHS; do
-    if [ -d $p ]; then
-        INSTALL_PATH=$p
-        break
-    fi
+	if [ -d $p ]; then
+		INSTALL_PATH=$p
+		break
+	fi
 done
 
 # check if the user has write access to the INSTALL_PATH
 if [ -z "$INSTALL_PATH" ]; then
-    INSTALL_PATH="/usr/local/bin"
-    if [ ! -w $INSTALL_PATH ]; then
-        echo "You don't have write access to $INSTALL_PATH"
-        echo "Please, run with sudo or install locally"
-        exit 1
-    fi
+	INSTALL_PATH="/usr/local/bin"
+	if [ ! -w $INSTALL_PATH ]; then
+		echo "You don't have write access to $INSTALL_PATH"
+		echo "Please, run with sudo or install locally"
+		exit 1
+	fi
 fi
 
 # ensure that $INSTALL_PATH is in the PATH
-if ! echo $PATH | grep -q $INSTALL_PATH; then
-    echo "Sorry, $INSTALL_PATH is not in the PATH"
-    echo "Please, add it to your PATH in your shell configuration file"
-    echo "then restart your shell and run this script again"
-    exit 1
+if ! echo "$PATH" | grep -q "$INSTALL_PATH"; then
+	echo "Sorry, ${INSTALL_PATH} is not in the PATH"
+	echo "Please, add it to your PATH in your shell configuration file"
+	echo "then restart your shell and run this script again"
+	exit 1
 fi
 
 # Where to download the binary
@@ -47,7 +47,7 @@ BASE="https://github.com/metal3d/katenary/releases/latest/download/"
 
 # for compatibility with older ARM versions
 if [ $ARCH = "x86_64" ]; then
-    ARCH="amd64"
+	ARCH="amd64"
 fi
 
 BIN_URL="$BASE/katenary-$OS-$ARCH"
@@ -58,8 +58,8 @@ echo "Downloading $BIN_URL"
 T=$(mktemp -u)
 curl -SL -# $BIN_URL -o $T || (echo "Failed to download katenary" && rm -f $T && exit 1)
 
-mv $T $INSTALL_PATH/katenary
-chmod +x $INSTALL_PATH/katenary
+mv "$T" "${INSTALL_PATH}/katenary"
+chmod +x "${INSTALL_PATH}/katenary"
 echo
 echo "Installed to $INSTALL_PATH/katenary"
 echo "Installation complete! Run 'katenary help' to get started."