diff --git a/plat/socionext/synquacer/platform.mk b/plat/socionext/synquacer/platform.mk
index 3eab3d6..b76ae88 100644
--- a/plat/socionext/synquacer/platform.mk
+++ b/plat/socionext/synquacer/platform.mk
@@ -73,12 +73,12 @@
 certificates: $(ROT_KEY)
 $(ROT_KEY): | $(BUILD_PLAT)
 	@echo "  OPENSSL $@"
-	$(Q)openssl genrsa 2048 > $@ 2>/dev/null
+	$(Q)${OPENSSL_BIN_PATH}/openssl genrsa 2048 > $@ 2>/dev/null
 
 $(ROTPK_HASH): $(ROT_KEY)
 	@echo "  OPENSSL $@"
-	$(Q)openssl rsa -in $< -pubout -outform DER 2>/dev/null |\
-	openssl dgst -sha256 -binary > $@ 2>/dev/null
+	$(Q)${OPENSSL_BIN_PATH}/openssl rsa -in $< -pubout -outform DER 2>/dev/null |\
+	${OPENSSL_BIN_PATH}/openssl dgst -sha256 -binary > $@ 2>/dev/null
 
 endif	# TRUSTED_BOARD_BOOT
 endif