diff --git a/tools/toolchains/arm.py b/tools/toolchains/arm.py
index f294edb5f5..c3f85a302c 100644
--- a/tools/toolchains/arm.py
+++ b/tools/toolchains/arm.py
@@ -106,6 +106,7 @@ class ARM(mbedToolchain):
             if match is not None:
                 if msg is not None:
                     self.cc_info(msg)
+                    msg = None
                 msg = {
                     'severity': match.group('severity').lower(),
                     'file': match.group('file'),
diff --git a/tools/toolchains/gcc.py b/tools/toolchains/gcc.py
index dbbe2c62bc..b4b98ef056 100644
--- a/tools/toolchains/gcc.py
+++ b/tools/toolchains/gcc.py
@@ -146,6 +146,7 @@ class GCC(mbedToolchain):
             if match is not None:
                 if msg is not None:
                     self.cc_info(msg)
+                    msg = None
                 msg = {
                     'severity': match.group('severity').lower(),
                     'file': match.group('file'),
@@ -166,6 +167,9 @@ class GCC(mbedToolchain):
                 else:
                     msg['text'] += line+"\n"
 
+        if msg is not None:
+            self.cc_info(msg)
+
     def get_dep_option(self, object):
         base, _ = splitext(object)
         dep_path = base + '.d'
diff --git a/tools/toolchains/iar.py b/tools/toolchains/iar.py
index b712c2a158..b454e6e177 100644
--- a/tools/toolchains/iar.py
+++ b/tools/toolchains/iar.py
@@ -123,6 +123,7 @@ class IAR(mbedToolchain):
             if match is not None:
                 if msg is not None:
                     self.cc_info(msg)
+                    msg = None
                 msg = {
                     'severity': match.group('severity').lower(),
                     'file': match.group('file'),
@@ -143,6 +144,9 @@ class IAR(mbedToolchain):
                 else:
                     msg['text'] += line+"\n"
 
+        if msg is not None:
+            self.cc_info(msg)
+
     def get_dep_option(self, object):
         base, _ = splitext(object)
         dep_path = base + '.d'