diff --git a/dev-lang/uasm/uasm-2.56.2.ebuild b/dev-lang/uasm/uasm-2.56.2.ebuild
index 71f4e7f3518f3..de92e4d8306bf 100644
--- a/dev-lang/uasm/uasm-2.56.2.ebuild
+++ b/dev-lang/uasm/uasm-2.56.2.ebuild
@@ -30,6 +30,8 @@ src_compile() {
 	append-cflags -fcommon
 	# https://github.com/Terraspace/UASM/issues/197
 	append-cflags -Wno-error=incompatible-pointer-types
+	# BUG: 951108
+	append-cflags -std=gnu17
 
 	emake -f gccLinux64.mak \
 		CC="$(tc-getCC)" \
diff --git a/dev-lang/uasm/uasm-2.57.ebuild b/dev-lang/uasm/uasm-2.57.ebuild
index 4aff172e02f63..871332b4c96c2 100644
--- a/dev-lang/uasm/uasm-2.57.ebuild
+++ b/dev-lang/uasm/uasm-2.57.ebuild
@@ -31,6 +31,8 @@ src_compile() {
 	append-cflags -fcommon
 	# BUG: https://github.com/Terraspace/UASM/issues/197
 	append-cflags -Wno-error=incompatible-pointer-types
+	# BUG: 951108
+	append-cflags -std=gnu17
 
 	emake -f Makefile-Linux-GCC-64.mak \
 		CC="$(tc-getCC)" \