diff --git a/toolchain/toolchain-external/toolchain-external.mk b/toolchain/toolchain-external/toolchain-external.mk
index 342bc842b3..8e64789608 100644
--- a/toolchain/toolchain-external/toolchain-external.mk
+++ b/toolchain/toolchain-external/toolchain-external.mk
@@ -160,6 +160,7 @@ TOOLCHAIN_EXTERNAL_TOOLCHAIN_WRAPPER_ARGS += \
 TOOLCHAIN_EXTERNAL_CROSS = $(TOOLCHAIN_EXTERNAL_BIN)/$(TOOLCHAIN_EXTERNAL_PREFIX)-
 TOOLCHAIN_EXTERNAL_CC = $(TOOLCHAIN_EXTERNAL_CROSS)gcc$(TOOLCHAIN_EXTERNAL_SUFFIX)
 TOOLCHAIN_EXTERNAL_CXX = $(TOOLCHAIN_EXTERNAL_CROSS)g++$(TOOLCHAIN_EXTERNAL_SUFFIX)
+TOOLCHAIN_EXTERNAL_FC = $(TOOLCHAIN_EXTERNAL_CROSS)gfortran$(TOOLCHAIN_EXTERNAL_SUFFIX)
 TOOLCHAIN_EXTERNAL_READELF = $(TOOLCHAIN_EXTERNAL_CROSS)readelf$(TOOLCHAIN_EXTERNAL_SUFFIX)
 
 ifeq ($(filter $(HOST_DIR)/%,$(TOOLCHAIN_EXTERNAL_BIN)),)
@@ -521,6 +522,9 @@ define TOOLCHAIN_EXTERNAL_CONFIGURE_CMDS
 	if test "$(BR2_INSTALL_LIBSTDCPP)" = "y" ; then \
 		$(call check_cplusplus,$(TOOLCHAIN_EXTERNAL_CXX)) ; \
 	fi ; \
+	if test "$(BR2_TOOLCHAIN_HAS_FORTRAN)" = "y" ; then \
+		$(call check_fortran,$(TOOLCHAIN_EXTERNAL_FC)) ; \
+	fi ; \
 	if test "$(BR2_TOOLCHAIN_EXTERNAL_UCLIBC)" = "y" ; then \
 		$(call check_uclibc,$${SYSROOT_DIR}) ; \
 	elif test "$(BR2_TOOLCHAIN_EXTERNAL_MUSL)" = "y" ; then \