diff --git a/package/libxslt/libxslt.mk b/package/libxslt/libxslt.mk
index 868ba6a10f..d89dde8d00 100644
--- a/package/libxslt/libxslt.mk
+++ b/package/libxslt/libxslt.mk
@@ -19,6 +19,12 @@ LIBXSLT_CONF_OPTS = \
 LIBXSLT_CONFIG_SCRIPTS = xslt-config
 LIBXSLT_DEPENDENCIES = libxml2
 
+# GCC bug with Os/O2/O3, PR77311
+# error: unable to find a register to spill in class 'CCREGS'
+ifeq ($(BR2_bfin),y)
+LIBXSLT_CONF_ENV += CFLAGS="$(TARGET_CFLAGS) -O1"
+endif
+
 # If we have enabled libgcrypt then use it, else disable crypto support.
 ifeq ($(BR2_PACKAGE_LIBGCRYPT),y)
 LIBXSLT_DEPENDENCIES += libgcrypt