diff --git a/Makefile b/Makefile
index 4b75910..1521676 100644
--- a/Makefile
+++ b/Makefile
@@ -11,7 +11,7 @@ all: vieter
 # =====COMPILATION=====
 .PHONY: libvieter
 libvieter:
-	CFLAGS='-O3' make -C '$(SRC_DIR)/libvieter'
+	make -C '$(SRC_DIR)/libvieter' CFLAGS='-O3' 
 
 # Regular binary
 vieter: $(SOURCES) libvieter
diff --git a/src/libvieter b/src/libvieter
index 11709cc..379a05a 160000
--- a/src/libvieter
+++ b/src/libvieter
@@ -1 +1 @@
-Subproject commit 11709cc611c02a4e9140409a0e81d639522c06f1
+Subproject commit 379a05a7b6b604c107360e0a679fb3ea5400e02c