diff --git a/adapters/gumgum/gumgum.go b/adapters/gumgum/gumgum.go
index 4e44aacb82e..cc9378b8aa9 100644
--- a/adapters/gumgum/gumgum.go
+++ b/adapters/gumgum/gumgum.go
@@ -121,7 +121,9 @@ func (g *adapter) MakeBids(internalRequest *openrtb2.BidRequest, externalRequest
 			})
 		}
 	}
-
+	if bidResp.Cur != "" {
+		bidResponse.Currency = bidResp.Cur
+	}
 	return bidResponse, errs
 }
 
diff --git a/adapters/gumgum/gumgumtest/supplemental/convert-currency.json b/adapters/gumgum/gumgumtest/supplemental/convert-currency.json
new file mode 100644
index 00000000000..6c5be286275
--- /dev/null
+++ b/adapters/gumgum/gumgumtest/supplemental/convert-currency.json
@@ -0,0 +1,111 @@
+{
+  "mockBidRequest": {
+    "id": "test-request-id",
+    "imp": [
+      {
+        "id": "test-imp-id",
+        "banner": {
+          "format": [
+            {
+              "w": 300,
+              "h": 250
+            },
+            {
+              "w": 300,
+              "h": 300
+            }
+          ],
+          "w": 300,
+          "h": 250
+        },
+        "ext": {
+          "bidder": {
+            "pubId": 12345678
+          }
+        }
+      }
+    ],
+    "site": {
+      "publisher": {
+        "id": "12345678"
+      }
+    }
+  },
+
+  "httpCalls": [
+    {
+      "expectedRequest": {
+        "uri": "https://g2.gumgum.com/providers/prbds2s/bid",
+        "body":{
+          "id": "test-request-id",
+          "imp": [{
+            "id": "test-imp-id",
+            "banner": {
+              "format": [{
+                "w": 300,
+                "h": 250
+              }, {
+                "w": 300,
+                "h": 300
+              }],
+              "w": 300,
+              "h": 250
+            },
+            "ext": {
+              "bidder": {
+                "pubId": 12345678
+              }
+            }
+          }],
+          "site": {
+            "publisher": {
+              "id": "12345678"
+            }
+          }
+        },
+        "impIDs":["test-imp-id"]
+      },
+      "mockResponse": {
+        "status": 200,
+        "body": {
+          "cur": "EUR",
+          "seatbid": [
+            {
+              "bid": [
+                {
+                  "crid": "2068416",
+                  "adm": "some-test-ad",
+                  "adid": "2068416",
+                  "price": 5,
+                  "id": "5736a50b-6b05-42a8-aa6d-b0a4649dcd05",
+                  "impid": "test-imp-id",
+                  "cid": "4747"
+                }
+              ]
+            }
+          ]
+        }
+      }
+    }
+  ],
+
+  "expectedBidResponses": [
+    {
+      "currency": "EUR",
+      "bids": [
+        {
+          "bid": {
+            "crid": "2068416",
+            "adm": "some-test-ad",
+            "adid": "2068416",
+            "price": 5,
+            "id": "5736a50b-6b05-42a8-aa6d-b0a4649dcd05",
+            "impid": "test-imp-id",
+            "cid": "4747"
+          },
+          "type": "banner"
+        }
+      ]
+    }
+  ]
+}