2 files changed, 2 insertions, 2 deletions
diff --git a/include/rtl/string.hxx b/include/rtl/string.hxx
index 3c540198f95f..e5e7f5716b74 100644
--- a/include/rtl/string.hxx
+++ b/include/rtl/string.hxx
@@ -329,7 +329,7 @@ public:
 #endif
 
 #if defined LIBO_INTERNAL_ONLY
-    OString(std::string_view sv) {
+    explicit OString(std::string_view sv) {
         if (sv.size() > sal_uInt32(std::numeric_limits<sal_Int32>::max())) {
             throw std::bad_alloc();
         }
diff --git a/include/rtl/ustring.hxx b/include/rtl/ustring.hxx
index 9f8d08c8f9a5..270eedd2c32d 100644
--- a/include/rtl/ustring.hxx
+++ b/include/rtl/ustring.hxx
@@ -468,7 +468,7 @@ public:
 #endif
 
 #if defined LIBO_INTERNAL_ONLY
-    OUString(std::u16string_view sv) {
+    explicit OUString(std::u16string_view sv) {
         if (sv.size() > sal_uInt32(std::numeric_limits<sal_Int32>::max())) {
             throw std::bad_alloc();
         }