diff --git a/installer/install.sh b/installer/install.sh
index 90f316a..26be6e6 100644
--- a/installer/install.sh
+++ b/installer/install.sh
@@ -4,7 +4,7 @@ OPTIK_VER=1.4.1
 
 # Do we have the dns modules??
 ./check_modules.py dns
-if [ "$?" == "1" ]; then
+if [ "$?" = "1" ]; then
     DNSPYTHON=dnspython-$DNSPYTHON_VER
     tar zxf $DNSPYTHON.tar.gz
     cd $DNSPYTHON
@@ -13,7 +13,7 @@ if [ "$?" == "1" ]; then
 fi
 
 ./check_modules.py optparse
-if [ "$?" == "1" ]; then
+if [ "$?" = "1" ]; then
     OPTIK=dnspython-$OPTIK_VER
     tar zxf $OPTIK.tar.gz
     cd $OPTIK