diff --git a/corpus/strings.txt b/corpus/strings.txt
index 68d2e98..dc13b0d 100644
--- a/corpus/strings.txt
+++ b/corpus/strings.txt
@@ -57,9 +57,7 @@ ENV KEY "expansions: $FOO ${BAR}"
   (env_instruction
     (env_pair
       (unquoted_string)
-      (double_quoted_string
-        (double_quoted_escape_sequence)
-        (double_quoted_escape_sequence))))
+      (double_quoted_string)))
   (env_instruction
     (env_pair
       (unquoted_string)
@@ -106,9 +104,7 @@ ENV KEY 'not escape sequences: \a \n'
   (env_instruction
     (env_pair
       (unquoted_string)
-      (single_quoted_string
-        (single_quoted_escape_sequence)
-        (single_quoted_escape_sequence)))))
+      (single_quoted_string))))
 
 ==========================
 Unquoted strings
diff --git a/grammar.js b/grammar.js
index 77ef352..d59f61c 100644
--- a/grammar.js
+++ b/grammar.js
@@ -391,6 +391,7 @@ module.exports = grammar({
           choice(
             token.immediate(/[^"\n\\\$]+/),
             $.double_quoted_escape_sequence,
+            "\\",
             $._immediate_expansion
           )
         ),
@@ -404,7 +405,8 @@ module.exports = grammar({
         repeat(
           choice(
             token.immediate(/[^'\n\\]+/),
-            $.single_quoted_escape_sequence
+            $.single_quoted_escape_sequence,
+            "\\",
           )
         ),
         "'"
@@ -422,16 +424,14 @@ module.exports = grammar({
     double_quoted_escape_sequence: ($) => token.immediate(
       choice(
         "\\\\",
-        "\\\"",
-        "\\"
+        "\\\""
       )
     ),
 
     single_quoted_escape_sequence: ($) => token.immediate(
       choice(
         "\\\\",
-        "\\'",
-        "\\"
+        "\\'"
       )
     ),