diff --git a/src/common.rs b/src/common.rs
index 31ca3cddc..ad10e3844 100644
--- a/src/common.rs
+++ b/src/common.rs
@@ -451,9 +451,13 @@ fn escape_string_var(input: &wstr) -> WString {
 /// \param in is the raw string to be searched for literally when substituted in a PCRE2 expression.
 fn escape_string_pcre2(input: &wstr) -> WString {
     let mut out = WString::new();
-    out.reserve(input.len());
+    out.reserve(input.len() + input.len() / 2);
 
     for c in input.chars() {
+        if c == '\n' {
+            out.push_str("\\n");
+            continue;
+        }
         if [
             '.', '^', '$', '*', '+', '(', ')', '?', '[', '{', '}', '\\', '|',
             // these two only *need* to be escaped within a character class, and technically it
diff --git a/tests/checks/string.fish b/tests/checks/string.fish
index 2519c68c3..c3494e582 100644
--- a/tests/checks/string.fish
+++ b/tests/checks/string.fish
@@ -309,9 +309,12 @@ string escape --style=var 中 | string unescape --style=var
 string escape --style=regex ".ext"
 string escape --style=regex "bonjour, amigo"
 string escape --style=regex "^this is a literal string"
+string escape --style=regex "hello
+world"
 # CHECK: \.ext
 # CHECK: bonjour, amigo
 # CHECK: \^this is a literal string
+# CHECK: hello\nworld
 
 ### Verify that we can correctly unescape the same strings
 #   we tested escaping above.