diff --git a/go.mod b/go.mod
index 002d9dccc..f2a873585 100644
--- a/go.mod
+++ b/go.mod
@@ -44,7 +44,7 @@ require (
 	github.com/gordonklaus/ineffassign v0.0.0-20180909121442-1003c8bd00dc
 	github.com/imdario/mergo v0.3.7
 	github.com/inconshreveable/mousetrap v1.0.0 // indirect
-	github.com/jgautheron/goconst v0.0.0-20170703170152-9740945f5dcb
+	github.com/jgautheron/goconst v0.0.0-20200227150835-cda7ea3bf591
 	github.com/labstack/echo/v4 v4.1.14
 	github.com/labstack/gommon v0.3.0
 	github.com/laurent22/ical-go v0.1.1-0.20181107184520-7e5d6ade8eef
diff --git a/go.sum b/go.sum
index 5b4050cdb..986b9fa70 100644
--- a/go.sum
+++ b/go.sum
@@ -163,6 +163,8 @@ github.com/jackc/fake v0.0.0-20150926172116-812a484cc733/go.mod h1:WrMFNQdiFJ80s
 github.com/jackc/pgx v3.6.0+incompatible/go.mod h1:0ZGrqGqkRlliWnWB4zKnWtjbSWbGkVEFm4TeybAXq+I=
 github.com/jgautheron/goconst v0.0.0-20170703170152-9740945f5dcb h1:D5s1HIu80AcMGcqmk7fNIVptmAubVHHaj3v5Upex6Zs=
 github.com/jgautheron/goconst v0.0.0-20170703170152-9740945f5dcb/go.mod h1:82TxjOpWQiPmywlbIaB2ZkqJoSYJdLGPgAJDvM3PbKc=
+github.com/jgautheron/goconst v0.0.0-20200227150835-cda7ea3bf591 h1:x/BpEhm6aL26o4TLtcU0loJ7B3+69jielrGc70V7Yb4=
+github.com/jgautheron/goconst v0.0.0-20200227150835-cda7ea3bf591/go.mod h1:aAosetZ5zaeC/2EfMeRswtxUFBpe2Hr7HzkgX4fanO4=
 github.com/joho/godotenv v1.3.0 h1:Zjp+RcGpHhGlrMbJzXTrZZPrWj+1vfm90La1wgB6Bhc=
 github.com/joho/godotenv v1.3.0/go.mod h1:7hK45KPybAkOC6peb+G5yklZfMxEjkZhHbwpqxOKXbg=
 github.com/json-iterator/go v0.0.0-20180806060727-1624edc4454b/go.mod h1:+SdeFBvtyEkXs7REEP0seUULqWtbJapLOCVDaaPEHmU=
diff --git a/vendor/github.com/jgautheron/goconst/go.mod b/vendor/github.com/jgautheron/goconst/go.mod
new file mode 100644
index 000000000..53dbfbbb9
--- /dev/null
+++ b/vendor/github.com/jgautheron/goconst/go.mod
@@ -0,0 +1,3 @@
+module github.com/jgautheron/goconst
+
+go 1.13
diff --git a/vendor/github.com/jgautheron/goconst/visitor.go b/vendor/github.com/jgautheron/goconst/visitor.go
index a86421f6d..27cd5d8a2 100644
--- a/vendor/github.com/jgautheron/goconst/visitor.go
+++ b/vendor/github.com/jgautheron/goconst/visitor.go
@@ -95,6 +95,15 @@ func (v *treeVisitor) Visit(node ast.Node) ast.Visitor {
 				v.addString(lit.Value, lit.Pos())
 			}
 		}
+
+	// fn("http://")
+	case *ast.CallExpr:
+		for _, item := range t.Args {
+			lit, ok := item.(*ast.BasicLit)
+			if ok && v.isSupported(lit.Kind) {
+				v.addString(lit.Value, lit.Pos())
+			}
+		}
 	}
 
 	return v
@@ -102,7 +111,8 @@ func (v *treeVisitor) Visit(node ast.Node) ast.Visitor {
 
 // addString adds a string in the map along with its position in the tree.
 func (v *treeVisitor) addString(str string, pos token.Pos) {
-	str = strings.Replace(str, `"`, "", 2)
+	// Drop first and last character, quote, backquote...
+	str = str[1 : len(str)-1]
 
 	// Ignore empty strings
 	if len(str) == 0 {
diff --git a/vendor/modules.txt b/vendor/modules.txt
index 9627ec1da..f03bf25d9 100644
--- a/vendor/modules.txt
+++ b/vendor/modules.txt
@@ -91,7 +91,7 @@ github.com/hashicorp/hcl/json/token
 github.com/imdario/mergo
 # github.com/inconshreveable/mousetrap v1.0.0
 github.com/inconshreveable/mousetrap
-# github.com/jgautheron/goconst v0.0.0-20170703170152-9740945f5dcb
+# github.com/jgautheron/goconst v0.0.0-20200227150835-cda7ea3bf591
 github.com/jgautheron/goconst
 github.com/jgautheron/goconst/cmd/goconst
 # github.com/labstack/echo/v4 v4.1.14