diff --git a/pidd.sh b/pidd.sh
index 2f75e36..70fb363 100644
--- a/pidd.sh
+++ b/pidd.sh
@@ -555,7 +555,7 @@ pidd_write_ca_certificates() {
 		"${pidd_wcc__path}" \
 		"${pidd_wcc__text}"
 		pidd_openssl "${pidd_wcc__path}"
-		pidd_wcc__index=$((pidd_wcc__index+1))
+		pidd_wcc__index=$((pidd_wcc__index + 1))
 		eval "pidd_wcc__text=\"\${PIDD_CA_${pidd_wcc__index}}\""
 	done
 }
@@ -650,7 +650,7 @@ pidd_write_python_module() {
 "
 	done
 	pidd_write "${PIDD_PYTHON_PACKAGES}/env.py" "${pidd_wpm__text}
-PIDD_STEP = $((PIDD_STEP+1))
+PIDD_STEP = $((PIDD_STEP + 1))
 "
 }
 
@@ -783,7 +783,7 @@ pidd_split() {
 }
 
 pidd_step() {
-	PIDD_STEP=$((PIDD_STEP+1))
+	PIDD_STEP=$((PIDD_STEP + 1))
 	echo "\
 ${PIDD_DOWN}
 ${PIDD_VERT} ${PIDD_STEP} ${*}