diff --git a/README.md b/README.md
index 04e7501e55..eb62e325f1 100644
--- a/README.md
+++ b/README.md
@@ -60,10 +60,10 @@ Num | Detector | What it Detects | Impact | Confidence
 5 | `controlled-delegatecall` | [Controlled delegatecall destination](https://github.com/trailofbits/slither/wiki/Vulnerabilities-Description#controlled-delegatecall) | High | Medium
 6 | `reentrancy` | [Reentrancy vulnerabilities](https://github.com/trailofbits/slither/wiki/Vulnerabilities-Description#reentrancy-vulnerabilities) | High | Medium
 7 | `locked-ether` | [Contracts that lock ether](https://github.com/trailofbits/slither/wiki/Vulnerabilities-Description#contracts-that-lock-ether) | Medium | High
-8 | `constant-func` | [Constant functions changing the state](https://github.com/trailofbits/slither/wiki/Vulnerabilities-Description#constant-functions-changing-the-state) | Medium | Medium
+8 | `constant-function` | [Constant functions changing the state](https://github.com/trailofbits/slither/wiki/Vulnerabilities-Description#constant-functions-changing-the-state) | Medium | Medium
 9 | `tx-origin` | [Dangerous usage of `tx.origin`](https://github.com/trailofbits/slither/wiki/Vulnerabilities-Description#dangerous-usage-of-txorigin) | Medium | Medium
 10 | `uninitialized-local` | [Uninitialized local variables](https://github.com/trailofbits/slither/wiki/Vulnerabilities-Description#uninitialized-local-variables) | Medium | Medium
-11 | `unused-return` | [Unused return values](https://github.com/trailofbits/slither/wiki/Vulnerabilities-Description#unused-return) | Low | Medium
+11 | `unused-return` | [Unused return values](https://github.com/trailofbits/slither/wiki/Vulnerabilities-Description#unused-return) | Medium | Medium
 12 | `assembly` | [Assembly usage](https://github.com/trailofbits/slither/wiki/Vulnerabilities-Description#assembly-usage) | Informational | High
 13 | `constable-states` | [State variables that could be declared constant](https://github.com/trailofbits/slither/wiki/Vulnerabilities-Description#state-variables-that-could-be-declared-constant) | Informational | High
 14 | `external-function` | [Public function that could be declared as external](https://github.com/trailofbits/slither/wiki/Vulnerabilities-Description#public-function-that-could-be-declared-as-external) | Informational | High
@@ -73,6 +73,7 @@ Num | Detector | What it Detects | Impact | Confidence
 18 | `solc-version` | [Old versions of Solidity (< 0.4.23)](https://github.com/trailofbits/slither/wiki/Vulnerabilities-Description#old-versions-of-solidity) | Informational | High
 19 | `unused-state` | [Unused state variables](https://github.com/trailofbits/slither/wiki/Vulnerabilities-Description#unused-state-variables) | Informational | High
 
+
 [Contact us](https://www.trailofbits.com/contact/) to get access to additional detectors.
 
 ### Printers
diff --git a/slither/detectors/operations/unused_return_values.py b/slither/detectors/operations/unused_return_values.py
index 8177673776..2410622b8c 100644
--- a/slither/detectors/operations/unused_return_values.py
+++ b/slither/detectors/operations/unused_return_values.py
@@ -14,7 +14,7 @@ class UnusedReturnValues(AbstractDetector):
 
     ARGUMENT = 'unused-return'
     HELP = 'Unused return values'
-    IMPACT = DetectorClassification.LOW
+    IMPACT = DetectorClassification.MEDIUM
     CONFIDENCE = DetectorClassification.MEDIUM
 
     WIKI = 'https://github.com/trailofbits/slither/wiki/Vulnerabilities-Description#unused-return'