diff --git a/src/add-ons/locale/catalogs/plaintext/Catalog.cpp b/src/add-ons/locale/catalogs/plaintext/Catalog.cpp
index e64a4e441f..da4079a1c4 100644
--- a/src/add-ons/locale/catalogs/plaintext/Catalog.cpp
+++ b/src/add-ons/locale/catalogs/plaintext/Catalog.cpp
@@ -61,6 +61,7 @@ static int16 kCatArchiveVersion = 1;
 void
 escapeQuotedChars(BString& stringToEscape)
 {
+	stringToEscape.ReplaceAll("\\","\\\\");
 	stringToEscape.ReplaceAll("\n","\\n");
 	stringToEscape.ReplaceAll("\t","\\t");
 	stringToEscape.ReplaceAll("\"","\\\"");
diff --git a/src/tools/locale/PlainTextCatalog.cpp b/src/tools/locale/PlainTextCatalog.cpp
index d0700705fc..a73c131385 100644
--- a/src/tools/locale/PlainTextCatalog.cpp
+++ b/src/tools/locale/PlainTextCatalog.cpp
@@ -57,6 +57,7 @@ static int16 kCatArchiveVersion = 1;
 void
 escapeQuotedChars(BString& stringToEscape)
 {
+	stringToEscape.ReplaceAll("\\","\\\\");
 	stringToEscape.ReplaceAll("\n","\\n");
 	stringToEscape.ReplaceAll("\t","\\t");
 	stringToEscape.ReplaceAll("\"","\\\"");