diff --git a/variants/esp32/esp32.ini b/variants/esp32/esp32.ini
index 2a61bfa97..79b421dd5 100644
--- a/variants/esp32/esp32.ini
+++ b/variants/esp32/esp32.ini
@@ -22,16 +22,17 @@ build_flags =
   -DMESHTASTIC_EXCLUDE_RANGETEST=1
   ; HACK HACK HACK this is just a proof of concept ESP32+NimBLE but these
   ; includes need to be done properly somehow
-  -I${platformio.packages_dir}/framework-espidf/components/bt/host/nimble/nimble/nimble/host/include
-  -I${platformio.packages_dir}/framework-espidf/components/bt/host/nimble/nimble/nimble/include
-  -I${platformio.packages_dir}/framework-espidf/components/bt/host/nimble/nimble/porting/nimble/include
-  -I${platformio.packages_dir}/framework-espidf/components/bt/host/nimble/port/include
-  -I${platformio.packages_dir}/framework-espidf/components/bt/host/nimble/nimble/porting/npl/freertos/include
-  -I${platformio.packages_dir}/framework-espidf/components/bt/host/nimble/nimble/nimble/transport/include
-  -I${platformio.packages_dir}/framework-espidf/components/bt/host/nimble/nimble/nimble/host/services/gap/include
-  -I${platformio.packages_dir}/framework-espidf/components/bt/host/nimble/esp-hci/include
-  -I${platformio.packages_dir}/framework-espidf/components/bt/host/nimble/nimble/nimble/host/services/gatt/include
-  -I${platformio.packages_dir}/framework-espidf/components/bt/host/nimble/nimble/nimble/host/util/include
+  ; Quotes keep Windows packages_dir backslashes intact through POSIX flag parsing
+  -I"${platformio.packages_dir}/framework-espidf/components/bt/host/nimble/nimble/nimble/host/include"
+  -I"${platformio.packages_dir}/framework-espidf/components/bt/host/nimble/nimble/nimble/include"
+  -I"${platformio.packages_dir}/framework-espidf/components/bt/host/nimble/nimble/porting/nimble/include"
+  -I"${platformio.packages_dir}/framework-espidf/components/bt/host/nimble/port/include"
+  -I"${platformio.packages_dir}/framework-espidf/components/bt/host/nimble/nimble/porting/npl/freertos/include"
+  -I"${platformio.packages_dir}/framework-espidf/components/bt/host/nimble/nimble/nimble/transport/include"
+  -I"${platformio.packages_dir}/framework-espidf/components/bt/host/nimble/nimble/nimble/host/services/gap/include"
+  -I"${platformio.packages_dir}/framework-espidf/components/bt/host/nimble/esp-hci/include"
+  -I"${platformio.packages_dir}/framework-espidf/components/bt/host/nimble/nimble/nimble/host/services/gatt/include"
+  -I"${platformio.packages_dir}/framework-espidf/components/bt/host/nimble/nimble/nimble/host/util/include"
 
 custom_sdkconfig =
   ${esp32_common.custom_sdkconfig}