diff --git a/include/private/vkd3d_string.h b/include/private/vkd3d_string.h
index c64245c8..d46a7704 100644
--- a/include/private/vkd3d_string.h
+++ b/include/private/vkd3d_string.h
@@ -32,6 +32,7 @@ bool vkd3d_export_strequal(const WCHAR *a, const WCHAR *b);
 bool vkd3d_export_strequal_substr(const WCHAR *a, size_t n, const WCHAR *b);
 
 char *vkd3d_strdup(const char *str);
+char *vkd3d_strdup_n(const char *str, size_t n);
 WCHAR *vkd3d_wstrdup(const WCHAR *str);
 WCHAR *vkd3d_wstrdup_n(const WCHAR *str, size_t n);
 
diff --git a/libs/vkd3d-common/string.c b/libs/vkd3d-common/string.c
index 77ffa219..de365a30 100644
--- a/libs/vkd3d-common/string.c
+++ b/libs/vkd3d-common/string.c
@@ -37,6 +37,23 @@ char *vkd3d_strdup(const char *str)
     return duped;
 }
 
+char *vkd3d_strdup_n(const char *str, size_t n)
+{
+    char *duped;
+    size_t len;
+
+    len = strnlen(str, n);
+
+    duped = vkd3d_malloc(len + 1);
+    if (duped)
+    {
+        memcpy(duped, str, len);
+        duped[len] = '\0';
+    }
+
+    return duped;
+}
+
 WCHAR *vkd3d_wstrdup(const WCHAR *str)
 {
     WCHAR *duped;