diff --git a/lib/brakeman/checks/base_check.rb b/lib/brakeman/checks/base_check.rb
index 6a5b1b6e86b24d85a57fe5615404d86f20cb6276..732a3e1249e05d2ac648c0518c8c4f60003bf95e 100644
--- a/lib/brakeman/checks/base_check.rb
+++ b/lib/brakeman/checks/base_check.rb
@@ -282,7 +282,7 @@ class Brakeman::BaseCheck < Brakeman::SexpProcessor
       when :string_eval
         if sexp? exp.value
           if exp.value.node_type == :rlist
-            exp.value.each_exp do |e|
+            exp.value.each_sexp do |e|
               match = has_immediate_user_input?(e)
               return match if match
             end