diff --git a/slpkg/binary/install.py b/slpkg/binary/install.py
index f13c8401..1a985d49 100644
--- a/slpkg/binary/install.py
+++ b/slpkg/binary/install.py
@@ -223,6 +223,8 @@ class BinaryInstall(object):
         name = split_package(package)[0]
         rep_ver = split_package(package)[1]
         ins_ver = GetFromInstalled(name).version()[1:]
+        if not ins_ver:
+            ins_ver = "0"
         if LooseVersion(rep_ver) < LooseVersion(ins_ver):
             self.msg.template(78)
             print("| Package {0} don't downgrade, "
diff --git a/slpkg/sbo/slackbuild.py b/slpkg/sbo/slackbuild.py
index 9dc9d5a9..bd323ee3 100644
--- a/slpkg/sbo/slackbuild.py
+++ b/slpkg/sbo/slackbuild.py
@@ -359,6 +359,8 @@ class SBoInstall(object):
         name = "-".join(prgnam.split("-")[:-1])
         sbo_ver = prgnam.split("-")[-1]
         ins_ver = GetFromInstalled(name).version()[1:]
+        if not ins_ver:
+            ins_ver = "0"
         if LooseVersion(sbo_ver) < LooseVersion(ins_ver):
             self.msg.template(78)
             print("| Package {0} don't downgrade, "