diff --git a/tests/driver_hd44780/Makefile b/tests/driver_hd44780/Makefile
index 644a00d54e..e0db2b706b 100644
--- a/tests/driver_hd44780/Makefile
+++ b/tests/driver_hd44780/Makefile
@@ -2,4 +2,8 @@ include ../Makefile.tests_common
 
 USEMODULE += hd44780
 
+# Fails on esp32 because the driver defines default GPIOs that are used for the
+# SPI flash interface.
+TEST_ON_CI_BLACKLIST += esp32-wroom-32
+
 include $(RIOTBASE)/Makefile.include