Fix typo.

diff --git a/src/system.h b/src/system.h
index 83e0f629cddc9981f6648f1131fd18d707e40191..d8690a036bdc7c0af7220edfeb0f5dac1c2d39b8 100644 (file)
--- a/src/system.h
+++ b/src/system.h
@@ -819,7 +819,7 @@ ptr_align (void *ptr, size_t alignment)
   (void)((struct {char a[(assertion) ? 1 : -1]; } *) 0)
 
 #ifdef __GNUC__
-# define VERIFY_GCC_EXPR(assertion) VERIFY_EXPR (expression)
+# define VERIFY_GCC_EXPR(assertion) VERIFY_EXPR (assertion)
 #else
 # define VERIFY_GCC_EXPR(assertion) (void)0
 #endif