diff --git a/cmd/root.go b/cmd/root.go
index a767aca..8f63f41 100644
--- a/cmd/root.go
+++ b/cmd/root.go
@@ -138,7 +138,7 @@ func init() {
 	rootCmd.Flags().IntSliceVarP(&config.PrimaryKeyPositions, "primary-key", "p", []int{0}, "Primary key positions of the Input CSV as comma separated values Eg: 1,2")
 	rootCmd.Flags().IntSliceVarP(&config.ValueColumnPositions, "columns", "", []int{}, "Selectively compare positions in CSV Eg: 1,2. Default is entire row")
 	rootCmd.Flags().IntSliceVarP(&config.IncludeColumnPositions, "include", "", []int{}, "Include positions in CSV to display Eg: 1,2. Default is entire row")
-	rootCmd.Flags().StringVarP(&config.Format, "format", "o", "rowmark", fmt.Sprintf("Available (%s)", strings.Join(allFormats, "|")))
+	rootCmd.Flags().StringVarP(&config.Format, "format", "o", "diff", fmt.Sprintf("Available (%s)", strings.Join(allFormats, "|")))
 
 	rootCmd.Flags().BoolVarP(&timed, "time", "", false, "Measure time")
 }
diff --git a/cmd/version.go b/cmd/version.go
index 532bb40..97fda97 100644
--- a/cmd/version.go
+++ b/cmd/version.go
@@ -1,15 +1,5 @@
 package cmd
 
-import (
-	"fmt"
-	"os"
-
-	"github.com/blang/semver"
-)
-
-// VersionString to display on --version call
-const VersionString = "csvdiff v1.0.0"
-
 const defaultVersion = "1.0-dev"
 
 var version = defaultVersion
@@ -21,19 +11,6 @@ func SetVersion(_version string) {
 		return
 	}
 
-	v, err := semver.Make(_version)
-	if err != nil {
-		fmt.Fprintf(os.Stderr, "built with wrong version tag\n")
-		version = defaultVersion
-		return
-	}
-
-	if err = v.Validate(); err != nil {
-		fmt.Fprintf(os.Stderr, "built with wrong version tag\n")
-		version = defaultVersion
-		return
-	}
-
 	version = _version
 }
 
diff --git a/go.mod b/go.mod
index 15c8c40..339ffbd 100644
--- a/go.mod
+++ b/go.mod
@@ -2,7 +2,6 @@ module github.com/aswinkarthik/csvdiff
 
 require (
 	github.com/OneOfOne/xxhash v1.2.2 // indirect
-	github.com/blang/semver v3.5.1+incompatible
 	github.com/cespare/xxhash v1.0.0
 	github.com/davecgh/go-spew v1.1.0 // indirect
 	github.com/fatih/color v1.7.0
diff --git a/go.sum b/go.sum
index 1b8fe1e..4a50e50 100644
--- a/go.sum
+++ b/go.sum
@@ -1,7 +1,5 @@
 github.com/OneOfOne/xxhash v1.2.2 h1:KMrpdQIwFcEqXDklaen+P1axHaj9BSKzvpUUfnHldSE=
 github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU=
-github.com/blang/semver v3.5.1+incompatible h1:cQNTCjp13qL8KC3Nbxr/y2Bqb63oX6wdnnjpJbkM4JQ=
-github.com/blang/semver v3.5.1+incompatible/go.mod h1:kRBLl5iJ+tD4TcOOxsy/0fnwebNt5EWlYSAyrTnjyyk=
 github.com/cespare/xxhash v1.0.0 h1:naDmySfoNg0nKS62/ujM6e71ZgM2AoVdaqGwMG0w18A=
 github.com/cespare/xxhash v1.0.0/go.mod h1:fX/lfQBkSCDXZSUgv6jVIu/EVA3/JNseAX5asI4c4T4=
 github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=