diff --git a/src/Makefile b/src/Makefile
index 641fa357b89595e984c6e794c2218f91e69737d6..d1a477c6dfd80b8fbe0f362d777d230c12fed152 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -2,7 +2,7 @@ CXX = g++
 MPICXX = mpic++
 LD = g++
 MPILD = mpic++
-CFLAGS = -g -O3  -Wno-unused-variable
+CFLAGS = -Wall -g -O3  -Wno-unused-variable
 LDOPT = -lginac
 
 MPIEXEC = mpiexec