diff --git a/targets/targets.json b/targets/targets.json
index 52752f2e6b..378471682d 100644
--- a/targets/targets.json
+++ b/targets/targets.json
@@ -4368,7 +4368,6 @@
         "core": "Cortex-M4F",
         "supported_toolchains": [
             "ARM",
-            "IAR",
             "GCC_ARM"
         ],
         "extra_labels": [
@@ -4435,7 +4434,6 @@
         "core": "Cortex-M4F",
         "supported_toolchains": [
             "ARM",
-            "IAR",
             "GCC_ARM"
         ],
         "extra_labels": [