diff --git a/src/exec.rs b/src/exec.rs
index d5d3bf3f7a..68a9e18f43 100644
--- a/src/exec.rs
+++ b/src/exec.rs
@@ -850,9 +850,12 @@ impl<'c> ExecNoSync<'c> {
         match_start: usize,
         match_end: usize,
     ) -> Option<(usize, usize)> {
-        // We can't use match_end directly, because we may need to examine
-        // one "character" after the end of a match for lookahead operators.
-        let e = cmp::min(next_utf8(text, match_end), text.len());
+        // We can't use match_end directly, because we may need to examine one
+        // "character" after the end of a match for lookahead operators. We
+        // need to move two characters beyond the end, since some look-around
+        // operations may falsely assume a premature end of text otherwise.
+        let e = cmp::min(
+            next_utf8(text, next_utf8(text, match_end)), text.len());
         self.captures_nfa(slots, &text[..e], match_start)
     }
 
diff --git a/tests/regression.rs b/tests/regression.rs
index 1feeda17cb..7a30b1527f 100644
--- a/tests/regression.rs
+++ b/tests/regression.rs
@@ -86,3 +86,7 @@ mat!(wb_start_x, r"(?u:\b)^(?-u:X)", "X", Some((0, 1)));
 // See: https://github.com/rust-lang/regex/issues/321
 ismatch!(strange_anchor_non_complete_prefix, r"a^{2}", "", false);
 ismatch!(strange_anchor_non_complete_suffix, r"${2}a", "", false);
+
+// See: https://github.com/rust-lang/regex/issues/334
+mat!(captures_after_dfa_premature_end, r"a(b*(X|$))?", "abcbX",
+     Some((0, 1)), None, None);