diff --git a/lib/installers/deb.sh b/lib/installers/deb.sh
index 3e9b16c..05b4021 100644
--- a/lib/installers/deb.sh
+++ b/lib/installers/deb.sh
@@ -37,7 +37,7 @@ if [ $# -eq 1 ]; then
 else
     for i in $@
     do
-        if [ $i -ne "-i" ]
+        if [ $i != "-i" ]
         then
             case $i in
                 "rar" | "unrar")
diff --git a/lib/installers/pacman.sh b/lib/installers/pacman.sh
index 8154713..078607d 100644
--- a/lib/installers/pacman.sh
+++ b/lib/installers/pacman.sh
@@ -35,7 +35,7 @@ if [ $# -eq 1 ]; then
 else
     for i in $@
     do
-        if [ $i -ne "-i" ]
+        if [ $i != "-i" ]
         then
             case $i in
                 "rar" | "unrar")
diff --git a/lib/installers/rpm.sh b/lib/installers/rpm.sh
index 2eb2fbc..c568277 100644
--- a/lib/installers/rpm.sh
+++ b/lib/installers/rpm.sh
@@ -49,7 +49,7 @@ if [ $# -eq 1 ]; then
 else
     for i in $@
     do
-        if [ $i -ne "-i" ]
+        if [ $i != "-i" ]
         then
             case $i in
                 "rar" | "unrar")
diff --git a/lib/installers/zypper.sh b/lib/installers/zypper.sh
index e3dcfae..8ae5970 100644
--- a/lib/installers/zypper.sh
+++ b/lib/installers/zypper.sh
@@ -36,7 +36,7 @@ if [ $# -eq 1 ]; then
 else
     for i in $@
     do
-        if [ $i -ne "-i" ]
+        if [ $i != "-i" ]
         then
             case $i in
                 "rar" | "unrar")