diff --git a/elfio/elf_types.hpp b/elfio/elf_types.hpp
index c4f6b47..b1b225d 100644
--- a/elfio/elf_types.hpp
+++ b/elfio/elf_types.hpp
@@ -1213,10 +1213,10 @@ struct Elf64_Sym
 };
 
 #define ELF_ST_BIND( i )    ( ( i ) >> 4 )
-#define ELF_ST_TYPE( i )    ( (i)&0xf )
-#define ELF_ST_INFO( b, t ) ( ( ( b ) << 4 ) + ( (t)&0xf ) )
+#define ELF_ST_TYPE( i )    ( ( i ) & 0xf )
+#define ELF_ST_INFO( b, t ) ( ( ( b ) << 4 ) + ( ( t ) & 0xf ) )
 
-#define ELF_ST_VISIBILITY( o ) ( (o)&0x3 )
+#define ELF_ST_VISIBILITY( o ) ( ( o ) & 0x3 )
 
 // Relocation entries
 struct Elf32_Rel
@@ -1250,9 +1250,9 @@ struct Elf64_Rela
 #define ELF32_R_INFO( s, t ) ( ( ( s ) << 8 ) + (unsigned char)( t ) )
 
 #define ELF64_R_SYM( i )  ( ( i ) >> 32 )
-#define ELF64_R_TYPE( i ) ( (i)&0xffffffffL )
+#define ELF64_R_TYPE( i ) ( ( i ) & 0xffffffffL )
 #define ELF64_R_INFO( s, t ) \
-    ( ( ( (int64_t)( s ) ) << 32 ) + ( (t)&0xffffffffL ) )
+    ( ( ( (int64_t)( s ) ) << 32 ) + ( ( t ) & 0xffffffffL ) )
 
 // Dynamic structure
 struct Elf32_Dyn