diff --git a/script/clang-tidy b/script/clang-tidy
index b5905e0e4e..187acd02ad 100755
--- a/script/clang-tidy
+++ b/script/clang-tidy
@@ -105,7 +105,7 @@ def clang_options(idedata):
     # idedata contains include directories for all toolchains of this platform, only use those from the one in use
     toolchain_dir = os.path.normpath(f"{idedata['cxx_path']}/../../")
     for directory in idedata["includes"]["toolchain"]:
-        if directory.startswith(toolchain_dir):
+        if directory.startswith(toolchain_dir) and "picolibc" not in directory:
             cmd.extend(["-isystem", directory])
 
     # add library include directories using -isystem to suppress their errors