diff --git a/api/queries_pr.go b/api/queries_pr.go
index 265378b1e..34884d16f 100644
--- a/api/queries_pr.go
+++ b/api/queries_pr.go
@@ -504,6 +504,7 @@ func PullRequestList(client *Client, vars map[string]interface{}, limit int) ([]
       }
 	}`
 
+	var check = make(map[int]struct{})
 	var prs []PullRequest
 	pageLimit := min(limit, 100)
 	variables := map[string]interface{}{}
@@ -576,7 +577,12 @@ loop:
 		}
 
 		for _, edge := range prData.Edges {
+			if _, exists := check[edge.Node.Number]; exists {
+				continue
+			}
+
 			prs = append(prs, edge.Node)
+			check[edge.Node.Number] = struct{}{}
 			if len(prs) == limit {
 				break loop
 			}
diff --git a/command/pr_test.go b/command/pr_test.go
index 51469342a..395dd4097 100644
--- a/command/pr_test.go
+++ b/command/pr_test.go
@@ -240,6 +240,26 @@ No pull requests match your search
 	eq(t, reqBody.Variables.Labels, []string{"one", "two", "three"})
 }
 
+func TestPRList_filteringRemoveDuplicate(t *testing.T) {
+	initBlankContext("OWNER/REPO", "master")
+	http := initFakeHTTP()
+	http.StubRepoResponse("OWNER", "REPO")
+
+	jsonFile, _ := os.Open("../test/fixtures/prListWithDuplicates.json")
+	defer jsonFile.Close()
+	http.StubResponse(200, jsonFile)
+
+	output, err := RunCommand(prListCmd, "pr list -l one,two")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	eq(t, output.String(), `32	New feature	feature
+29	Fixed bad bug	hubot:bug-fix
+28	Improve documentation	docs
+`)
+}
+
 func TestPRList_filteringClosed(t *testing.T) {
 	initBlankContext("OWNER/REPO", "master")
 	http := initFakeHTTP()
diff --git a/test/fixtures/prListWithDuplicates.json b/test/fixtures/prListWithDuplicates.json
new file mode 100644
index 000000000..a84800f72
--- /dev/null
+++ b/test/fixtures/prListWithDuplicates.json
@@ -0,0 +1,50 @@
+{
+  "data": {
+    "repository": {
+      "pullRequests": {
+        "edges": [
+          {
+            "node": {
+              "number": 32,
+              "title": "New feature",
+              "url": "https://github.com/monalisa/hello/pull/32",
+              "headRefName": "feature"
+            }
+          },
+          {
+            "node": {
+              "number": 32,
+              "title": "New feature",
+              "url": "https://github.com/monalisa/hello/pull/32",
+              "headRefName": "feature"
+            }
+          },
+          {
+            "node": {
+              "number": 29,
+              "title": "Fixed bad bug",
+              "url": "https://github.com/monalisa/hello/pull/29",
+              "headRefName": "bug-fix",
+              "isCrossRepository": true,
+              "headRepositoryOwner": {
+                "login": "hubot"
+              }
+            }
+          },
+          {
+            "node": {
+              "number": 28,
+              "title": "Improve documentation",
+              "url": "https://github.com/monalisa/hello/pull/28",
+              "headRefName": "docs"
+            }
+          }
+        ],
+        "pageInfo": {
+          "hasNextPage": false,
+          "endCursor": ""
+        }
+      }
+    }
+  }
+}