diff --git a/scripts/systemtap/kem/kem_run.sh b/scripts/systemtap/kem/kem_run.sh
index 6416d97483a..f1e8653f578 100755
--- a/scripts/systemtap/kem/kem_run.sh
+++ b/scripts/systemtap/kem/kem_run.sh
@@ -25,7 +25,7 @@
 #
 # $ make
 
-KEM_DIR="$(readlink -f $0)"
+KEM_DIR=$(readlink -f "$0")
 KEM_DIR="${KEM_DIR%/*}"
 
 if [ "$EUID" -ne 0 ]; then
@@ -34,15 +34,15 @@ if [ "$EUID" -ne 0 ]; then
 fi
 
 echo Inserting kemd.ko
-insmod $KEM_DIR/kemd.ko
+insmod "$KEM_DIR/kemd.ko"
 
 for i in $(seq 0 $(($(nproc)-1)))
 do
-    mknod /dev/kemd$i c 60 $i
+    mknod "/dev/kemd$i" c 60 "$i"
 done
 
 echo Running Systemtap
-stap -g $KEM_DIR/kemd.stp &
+stap -g "$KEM_DIR/kemd.stp" &
 stapPID=$!
 
 # Wait stap for start
@@ -51,7 +51,7 @@ sleep 20
 echo Running KEM clients
 for i in $(seq 0 $(($(nproc)-1)))
 do
-    $KEM_DIR/m0kemc $i > kemc_cpu$i.log 2>&1 &
+    "$KEM_DIR/m0kemc" "$i" > kemc_cpu"$i".log 2>&1 &
     kemcPIDs[$i]=$!
 done
 
@@ -70,14 +70,14 @@ sleep 2
 
 for i in $(seq 0 $(($(nproc)-1)))
 do
-    rm -f /dev/kemd$i
+    rm -f "/dev/kemd$i"
 done
 
 echo Removing kemd.ko
-rmmod $KEM_DIR/kemd.ko
+rmmod "$KEM_DIR/kemd.ko"
 
 for i in $(seq 0 $(($(nproc)-1)))
 do
-    $KEM_DIR/../../../utils/m0run m0addb2dump $PWD/_kemc$i/o/100000000000000:2 | grep pagefault -A 1 | head -n 40
-    $KEM_DIR/../../../utils/m0run m0addb2dump $PWD/_kemc$i/o/100000000000000:2 | grep ctx_switch -A 1 | head -n 40
+    "$KEM_DIR/../../../utils/m0run m0addb2dump" "$PWD"/_kemc"$i"/o/100000000000000:2 | grep pagefault -A 1 | head -n 40
+    "$KEM_DIR/../../../utils/m0run m0addb2dump" "$PWD"/_kemc"$i"/o/100000000000000:2 | grep ctx_switch -A 1 | head -n 40
 done