diff --git a/src/portable/chipidea/ci_hs/ci_hs_imxrt.h b/src/portable/chipidea/ci_hs/ci_hs_imxrt.h
index 2de0d9cb4..607926a65 100644
--- a/src/portable/chipidea/ci_hs/ci_hs_imxrt.h
+++ b/src/portable/chipidea/ci_hs/ci_hs_imxrt.h
@@ -37,6 +37,11 @@
 #define USB2_BASE USB_OTG2_BASE
 #endif
 
+// RT1040 calls its only USB USB_OTG (no 1)
+#if defined(MIMXRT1042_SERIES)
+#define USB_OTG1_IRQn USB_OTG_IRQn
+#endif
+
 static const ci_hs_controller_t _ci_controller[] =
 {
   // RT1010 and RT1020 only has 1 USB controller