diff --git a/src/script/sign.cpp b/src/script/sign.cpp
--- a/src/script/sign.cpp
+++ b/src/script/sign.cpp
@@ -486,6 +486,9 @@
             } else {
                 input_errors[i] = ScriptErrorString(serror);
             }
+        } else {
+            // If this input succeeds, make sure there is no error set for it
+            input_errors.erase(i);
         }
     }
     return input_errors.empty();