diff --git a/_examples/golang-basics/example.gen.go b/_examples/golang-basics/example.gen.go
index 079344e..413c795 100644
--- a/_examples/golang-basics/example.gen.go
+++ b/_examples/golang-basics/example.gen.go
@@ -21,9 +21,9 @@ import (
 	"github.com/google/uuid"
 )
 
-const WebRpcHeader = "Webrpc"
+const WebrpcHeader = "Webrpc"
 
-const WebRpcHeaderValue = "webrpc@v0.20.3;gen-golang@unknown;example@v0.0.1"
+const WebrpcHeaderValue = "webrpc@v0.20.3;gen-golang@unknown;example@v0.0.1"
 
 // WebRPC description and code-gen version
 func WebRPCVersion() string {
@@ -49,7 +49,7 @@ type WebRpcGenVersions struct {
 }
 
 func ServerVersion() (*WebRpcGenVersions, error) {
-	versions, err := parseWebRpcGenVersions(WebRpcHeaderValue)
+	versions, err := parseWebRpcGenVersions(WebrpcHeaderValue)
 	if err != nil {
 		return nil, fmt.Errorf("webrpc header is invalid: %w", err)
 	}
@@ -58,11 +58,11 @@ func ServerVersion() (*WebRpcGenVersions, error) {
 }
 
 func VersionFromHeader(h http.Header) (*WebRpcGenVersions, error) {
-	if h.Get(WebRpcHeader) == "" {
+	if h.Get(WebrpcHeader) == "" {
 		return nil, fmt.Errorf("header is empty or missing")
 	}
 
-	versions, err := parseWebRpcGenVersions(h.Get(WebRpcHeader))
+	versions, err := parseWebRpcGenVersions(h.Get(WebrpcHeader))
 	if err != nil {
 		return nil, fmt.Errorf("webrpc header is invalid: %w", err)
 	}
@@ -340,7 +340,7 @@ func (s *exampleServiceServer) ServeHTTP(w http.ResponseWriter, r *http.Request)
 		}
 	}()
 
-	w.Header().Set(WebRpcHeader, WebRpcHeaderValue)
+	w.Header().Set(WebrpcHeader, WebrpcHeaderValue)
 
 	ctx := r.Context()
 	ctx = context.WithValue(ctx, HTTPResponseWriterCtxKey, w)
@@ -782,7 +782,7 @@ func newRequest(ctx context.Context, url string, reqBody io.Reader, contentType
 	}
 	req.Header.Set("Accept", contentType)
 	req.Header.Set("Content-Type", contentType)
-	req.Header.Set(WebRpcHeader, WebRpcHeaderValue)
+	req.Header.Set(WebrpcHeader, WebrpcHeaderValue)
 	if headers, ok := HTTPRequestHeaders(ctx); ok {
 		for k := range headers {
 			for _, v := range headers[k] {
diff --git a/_examples/golang-imports/api.gen.go b/_examples/golang-imports/api.gen.go
index 4ebdea3..08a0dcd 100644
--- a/_examples/golang-imports/api.gen.go
+++ b/_examples/golang-imports/api.gen.go
@@ -18,9 +18,9 @@ import (
 
 )
 
-const WebRpcHeader = "Webrpc"
+const WebrpcHeader = "Webrpc"
 
-const WebRpcHeaderValue = "webrpc@v0.20.3;gen-golang@unknown;example-api-service@v1.0.0"
+const WebrpcHeaderValue = "webrpc@v0.20.3;gen-golang@unknown;example-api-service@v1.0.0"
 
 // WebRPC description and code-gen version
 func WebRPCVersion() string {
@@ -46,7 +46,7 @@ type WebRpcGenVersions struct {
 }
 
 func ServerVersion() (*WebRpcGenVersions, error)  {
-    versions, err := parseWebRpcGenVersions(WebRpcHeaderValue)
+    versions, err := parseWebRpcGenVersions(WebrpcHeaderValue)
     if err != nil {
         return nil, fmt.Errorf("webrpc header is invalid: %w", err)
     }
@@ -55,11 +55,11 @@ func ServerVersion() (*WebRpcGenVersions, error)  {
 }
 
 func VersionFromHeader(h http.Header) (*WebRpcGenVersions, error) {
-    if h.Get(WebRpcHeader) == "" {
+    if h.Get(WebrpcHeader) == "" {
         return nil, fmt.Errorf("header is empty or missing")
     }
 
-    versions, err := parseWebRpcGenVersions(h.Get(WebRpcHeader))
+    versions, err := parseWebRpcGenVersions(h.Get(WebrpcHeader))
     if err != nil {
         return nil, fmt.Errorf("webrpc header is invalid: %w", err)
     }
@@ -231,7 +231,7 @@ func (s *exampleAPIServer) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 		}
 	}()
 
-	w.Header().Set(WebRpcHeader, WebRpcHeaderValue)
+	w.Header().Set(WebrpcHeader, WebrpcHeaderValue)
 
 	ctx := r.Context()
 	ctx = context.WithValue(ctx, HTTPResponseWriterCtxKey, w)
diff --git a/client.go.tmpl b/client.go.tmpl
index 794747f..9011341 100644
--- a/client.go.tmpl
+++ b/client.go.tmpl
@@ -209,7 +209,7 @@ func newRequest(ctx context.Context, url string, reqBody io.Reader, contentType
 	req.Header.Set("Accept", contentType)
 	req.Header.Set("Content-Type", contentType)
 	{{- if $opts.includeHeaders }}
-		req.Header.Set(WebRpcHeader, WebRpcHeaderValue)
+		req.Header.Set(WebrpcHeader, WebrpcHeaderValue)
 	{{- end }}
 	if headers, ok := HTTPRequestHeaders(ctx); ok {
 		for k := range headers {
diff --git a/main.go.tmpl b/main.go.tmpl
index 301e2a6..1e22808 100644
--- a/main.go.tmpl
+++ b/main.go.tmpl
@@ -82,9 +82,9 @@ package {{get $opts "pkg"}}
 
 {{template "imports" dict "Types" .Types "Opts" $opts }}
 
-const WebRpcHeader = "Webrpc"
+const WebrpcHeader = "Webrpc"
 
-const WebRpcHeaderValue = "{{ .WebrpcHeader }}"
+const WebrpcHeaderValue = "{{ .WebrpcHeader }}"
 
 // WebRPC description and code-gen version
 func WebRPCVersion() string {
@@ -110,7 +110,7 @@ type WebRpcGenVersions struct {
 }
 
 func ServerVersion() (*WebRpcGenVersions, error)  {
-    versions, err := parseWebRpcGenVersions(WebRpcHeaderValue)
+    versions, err := parseWebRpcGenVersions(WebrpcHeaderValue)
     if err != nil {
         return nil, fmt.Errorf("webrpc header is invalid: %w", err)
     }
@@ -119,11 +119,11 @@ func ServerVersion() (*WebRpcGenVersions, error)  {
 }
 
 func VersionFromHeader(h http.Header) (*WebRpcGenVersions, error) {
-    if h.Get(WebRpcHeader) == "" {
+    if h.Get(WebrpcHeader) == "" {
         return nil, fmt.Errorf("header is empty or missing")
     }
 
-    versions, err := parseWebRpcGenVersions(h.Get(WebRpcHeader))
+    versions, err := parseWebRpcGenVersions(h.Get(WebrpcHeader))
     if err != nil {
         return nil, fmt.Errorf("webrpc header is invalid: %w", err)
     }
diff --git a/server.go.tmpl b/server.go.tmpl
index 974e149..4907bb8 100644
--- a/server.go.tmpl
+++ b/server.go.tmpl
@@ -38,7 +38,7 @@ func (s *{{$serviceName}}) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 		}
 	}()
 
-	w.Header().Set(WebRpcHeader, WebRpcHeaderValue)
+	w.Header().Set(WebrpcHeader, WebrpcHeaderValue)
 
 	ctx := r.Context()
 	ctx = context.WithValue(ctx, HTTPResponseWriterCtxKey, w)