diff --git a/tools/toolchains/__init__.py b/tools/toolchains/__init__.py
index 29bec74106..3a12f99eab 100644
--- a/tools/toolchains/__init__.py
+++ b/tools/toolchains/__init__.py
@@ -532,8 +532,7 @@ class mbedToolchain:
 
     def get_labels(self):
         if self.labels is None:
-            toolchain_labels = [c.__name__ for c in getmro(self.__class__)]
-            toolchain_labels.remove('mbedToolchain')
+            toolchain_labels = self._get_toolchain_labels()
             self.labels = {
                 'TARGET': self.target.labels,
                 'FEATURE': self.target.features,
@@ -551,6 +550,12 @@ class mbedToolchain:
                 self.labels['TARGET'].append("RELEASE")
         return self.labels
 
+    def _get_toolchain_labels(self):
+        toolchain_labels = [c.__name__ for c in getmro(self.__class__)]
+        toolchain_labels.remove('mbedToolchain')
+        toolchain_labels.remove('object')
+        return toolchain_labels
+
 
     # Determine whether a source file needs updating/compiling
     def need_update(self, target, dependencies):
diff --git a/tools/toolchains/arm.py b/tools/toolchains/arm.py
index e7dc533882..0b2f07b870 100644
--- a/tools/toolchains/arm.py
+++ b/tools/toolchains/arm.py
@@ -91,6 +91,12 @@ class ARM(mbedToolchain):
 
         self.SHEBANG += " --cpu=%s" % cpu
 
+    def _get_toolchain_labels(self):
+        if getattr(self.target, "defalut_lib", "std") == "small":
+            return ["ARM", "ARM_MICRO"]
+        else:
+            return ["ARM", "ARM_STD"]
+
     def parse_dependencies(self, dep_path):
         dependencies = []
         for line in open(dep_path).readlines():
@@ -394,6 +400,9 @@ class ARMC6(ARM_STD):
         self.ar = [join(TOOLCHAIN_PATHS["ARMC6"], "armar")]
         self.elf2bin = join(TOOLCHAIN_PATHS["ARMC6"], "fromelf")
 
+    def _get_toolchain_labels(self):
+        return ["ARM", "ARM_STD", "ARMC6"]
+
     def parse_dependencies(self, dep_path):
         return mbedToolchain.parse_dependencies(self, dep_path)