diff --git a/meta/recipes-devtools/elfutils/elfutils_0.188.bb b/meta/recipes-devtools/elfutils/elfutils_0.188.bb
index c94e36071cd..084908a38c0 100644
--- a/meta/recipes-devtools/elfutils/elfutils_0.188.bb
+++ b/meta/recipes-devtools/elfutils/elfutils_0.188.bb
@@ -34,7 +34,7 @@ EXTRA_OECONF = "--program-prefix=eu-"
 
 BUILD_CFLAGS += "-Wno-error=stringop-overflow"
 # compatibility with curl 7.87; can be removed when elfutils upstream fixes the deprecation fails
-BUILD_CFLAGS += "-Wno-error=deprecated-declarations"
+CFLAGS:append = " -Wno-error=deprecated-declarations"
 
 DEPENDS_BZIP2 = "bzip2-replacement-native"
 DEPENDS_BZIP2:class-target = "bzip2"