diff --git a/core/signatures.py b/core/signatures.py
index 7abd294..9af5085 100644
--- a/core/signatures.py
+++ b/core/signatures.py
@@ -249,10 +249,10 @@ class HttpSignature:
                     content=body_bytes,
                     follow_redirects=method == "get",
                 )
-            except SSLError as e:
+            except SSLError as invalid_cert:
                 # Not our problem if the other end doesn't have proper SSL
-                print(f"{uri} {e}")
-                raise SSLCertVerificationError(e)
+                print(f"{uri} {invalid_cert}")
+                raise SSLCertVerificationError(invalid_cert) from invalid_cert
             except InvalidCodepoint as ex:
                 # Convert to a more generic error we handle
                 raise httpx.HTTPError(f"InvalidCodepoint: {str(ex)}") from None