diff --git a/package/ezxml/ezxml.mk b/package/ezxml/ezxml.mk
index a806e566ed..f1e18aa680 100644
--- a/package/ezxml/ezxml.mk
+++ b/package/ezxml/ezxml.mk
@@ -10,9 +10,16 @@ EZXML_INSTALL_STAGING = YES
 EZXML_LICENSE = MIT
 EZXML_LICENSE_FILES = license.txt
 
+EZXML_CFLAGS = $(TARGET_CFLAGS)
+
+# mmap code uses madvise which isn't available on nommu uClibc
+ifeq ($(BR2_USE_MMU),)
+EZXML_CFLAGS += -D EZXML_NOMMAP
+endif
+
 define EZXML_BUILD_CMDS
 	$(TARGET_MAKE_ENV) $(MAKE) -C $(@D) -f GNUmakefile \
-		CC="$(TARGET_CC)" CFLAGS="$(TARGET_CFLAGS)" AR=$(TARGET_AR)
+		CC="$(TARGET_CC)" CFLAGS="$(EZXML_CFLAGS)" AR=$(TARGET_AR)
 endef
 
 define EZXML_INSTALL_STAGING_CMDS