diff --git a/route/route.go b/route/route.go
index 1616ccb4bc..5a7ea40a47 100644
--- a/route/route.go
+++ b/route/route.go
@@ -48,7 +48,6 @@ const (
 	traceIDLongLength      = 16
 	GRPCMessageSizeMax int = 5000000 // 5MB
 	defaultSampleRate      = 1
-	int32MaxValue          = 2147483647 // (2**31)-1
 )
 
 type Router struct {
@@ -823,16 +822,16 @@ func getSampleRateFromAttributes(attrs map[string]interface{}) (int, error) {
 		i, err = strconv.ParseInt(v, 10, 32)
 		sampleRate = int(i)
 	case int:
-		if v > int32MaxValue {
-			sampleRate = int32MaxValue
+		if v > math.MaxInt32 {
+			sampleRate = math.MaxInt32
 		} else {
 			sampleRate = v
 		}
 	case int32:
 		sampleRate = int(v)
 	case int64:
-		if v > int32MaxValue {
-			sampleRate = int32MaxValue
+		if v > math.MaxInt32 {
+			sampleRate = math.MaxInt32
 		} else {
 			sampleRate = int(v)
 		}
diff --git a/route/route_test.go b/route/route_test.go
index 8a5a5f754b..e2b488046f 100644
--- a/route/route_test.go
+++ b/route/route_test.go
@@ -8,6 +8,7 @@ import (
 	"fmt"
 	"io"
 	"io/ioutil"
+	"math"
 	"net/http"
 	"net/http/httptest"
 	"strings"
@@ -326,6 +327,18 @@ func TestGetSampleRateFromAttributes(t *testing.T) {
 			attrValue:     "5",
 			expectedValue: 5,
 		},
+		{
+			name:          "can parse int64 value (less than int32 max)",
+			attrKey:       "sampleRate",
+			attrValue:     int64(100),
+			expectedValue: 100,
+		},
+		{
+			name:          "can parse int64 value (greater than int32 max)",
+			attrKey:       "sampleRate",
+			attrValue:     int64(math.MaxInt32 + 100),
+			expectedValue: math.MaxInt32,
+		},
 		{
 			name:          "does not parse float, gets default value",
 			attrKey:       "sampleRate",