diff --git a/scripts/build/builders/host.py b/scripts/build/builders/host.py
index 0b00449f09e74e..a536d6650b5e8f 100644
--- a/scripts/build/builders/host.py
+++ b/scripts/build/builders/host.py
@@ -254,10 +254,10 @@ def __init__(self, root, runner, app: HostApp, board=HostBoard.NATIVE,
             self.extra_gn_options.append('chip_config_memory_debug_dmalloc=true')
 
             # this is from `dmalloc -b -l DMALLOC_LOG -i 1 high`
-            self.build_env['DMALLOC_OPTIONS']='debug=0x4f4ed03,inter=1,log=DMALLOC_LOG'
+            self.build_env['DMALLOC_OPTIONS'] = 'debug=0x4f4ed03,inter=1,log=DMALLOC_LOG'
 
             # glib interop with dmalloc
-            self.build_env['G_SLICE']='always-malloc'
+            self.build_env['G_SLICE'] = 'always-malloc'
 
         if not separate_event_loop:
             self.extra_gn_options.append('config_use_separate_eventloop=false')