diff --git a/port/linux/test/strs-test.cpp b/port/linux/test/strs-test.cpp
index 2d39662a8..c05a9b52e 100644
--- a/port/linux/test/strs-test.cpp
+++ b/port/linux/test/strs-test.cpp
@@ -73,3 +73,11 @@ TEST(strs, format) {
 TEST(strs, mem) {
     EXPECT_EQ(pikaMemNow(), mem);
 }
+
+TEST(strs, arg_strAppend) {
+    Arg* str_arg = arg_setStr(NULL, (char*)"", (char*)"a");
+    str_arg = arg_strAppend(str_arg, (char*)"b");
+    EXPECT_STREQ(arg_getStr(str_arg), (char*)"ab");
+    arg_deinit(str_arg);
+    EXPECT_EQ(pikaMemNow(), 0);
+}
diff --git a/src/dataStrs.c b/src/dataStrs.c
index d8811b59f..3608f9019 100644
--- a/src/dataStrs.c
+++ b/src/dataStrs.c
@@ -113,3 +113,11 @@ char* strsFormat(Args* buffs, uint16_t buffSize, const char* fmt, ...) {
     return res;
 }
 
+Arg* arg_strAppend(Arg* arg_in, char* str_to_append){
+    Args* buffs = New_strBuff();
+    char* str_out = strsAppend(buffs, arg_getStr(arg_in), str_to_append);
+    Arg* arg_out = arg_setStr(arg_in, "", str_out);
+    arg_deinit(arg_in);
+    args_deinit(buffs);
+    return arg_out;
+}
\ No newline at end of file
diff --git a/src/dataStrs.h b/src/dataStrs.h
index b3e7445ab..59a9b1413 100644
--- a/src/dataStrs.h
+++ b/src/dataStrs.h
@@ -39,4 +39,5 @@ char* strsRemovePrefix(Args* buffs, char* inputStr, char* prefix);
 char* strsAppend(Args* buffs, char* strOrigin, char* strAppend);
 char* strsFormat(Args* buffs, uint16_t buffSize, const char* fmt, ...);
 char* strsGetDirectStr(Args* buffs, char* argPath);
+Arg* arg_strAppend(Arg* arg_in, char* str_to_append);
 #endif