diff --git a/src/os/core/linux/os_core_linux.c b/src/os/core/linux/os_core_linux.c
index 86e57e98..604786b4 100644
--- a/src/os/core/linux/os_core_linux.c
+++ b/src/os/core/linux/os_core_linux.c
@@ -267,7 +267,7 @@ os_file_open(OS_AccessFlags flags, String8 path)
   Temp scratch = scratch_begin(0, 0);
   String8 path_copy = push_str8_copy(scratch.arena, path);
   int lnx_flags = 0;
-  if(flags & (OS_AccessFlag_Read|OS_AccessFlag_Write))
+  if(flags & OS_AccessFlag_Read && flags & OS_AccessFlag_Write)
   {
     lnx_flags = O_RDWR;
   }
diff --git a/src/rdi_from_dwarf/rdi_from_dwarf.c b/src/rdi_from_dwarf/rdi_from_dwarf.c
index 1aa8356e..bfb70be2 100644
--- a/src/rdi_from_dwarf/rdi_from_dwarf.c
+++ b/src/rdi_from_dwarf/rdi_from_dwarf.c
@@ -430,9 +430,9 @@ entry_point(CmdLine *cmd_line)
   // track parse success
   B32 successful_parse = 1;
   
-#define PARSE_CHECK_ERROR(p,fmt,...) do{ if ((p) == 0){ \
+#define PARSE_CHECK_ERROR(p, fmt, ...) do{ if ((p) == 0){ \
 successful_parse = 0; \
-fprintf(stdout, "error(parsing): " fmt "\n", __VA_ARGS__); \
+fprintf(stdout, "error(parsing): " fmt "\n",##__VA_ARGS__); \
 } }while(0)
   
   // parse elf