diff --git a/scripts/build/builders/efr32.py b/scripts/build/builders/efr32.py
index 3aa9f66669ee8f..d4eb7bfa0870d8 100644
--- a/scripts/build/builders/efr32.py
+++ b/scripts/build/builders/efr32.py
@@ -221,7 +221,7 @@ def __init__(self,
         if "GSDK_ROOT" in os.environ:
             # EFR32 SDK is very large. If the SDK path is already known (the
             # case for pre-installed images), use it directly.
-            sdk_path=shlex.quote(os.environ['GSDK_ROOT'])
+            sdk_path = shlex.quote(os.environ['GSDK_ROOT'])
             self.extra_gn_options.append(f"efr32_sdk_root=\"{sdk_path}\"")
 
     def GnBuildArgs(self):