$NetBSD$

--- src/opts.def.orig	2016-03-06 21:09:07.000000000 +0000
+++ src/opts.def
@@ -67,9 +67,9 @@ export = <<- _EOExport_
 	extern  char const assert_fail_fmt[];
 
 	#define CX_ASSERT(_e)   \
-	\	if (!(_e))      \
-	\	    die(COMPLEXITY_EXIT_ASSERT, assert_fail_fmt, \
-	\	        __FILE__, __LINE__, #_e);
+		if (!(_e))      \
+		    die(COMPLEXITY_EXIT_ASSERT, assert_fail_fmt, \
+		        __FILE__, __LINE__, #_e);
 	_EOExport_;
 
 include = <<- _EOInclude_
@@ -77,7 +77,7 @@ include = <<- _EOInclude_
 	FILE *  trace_fp = NULL;
 	int     score_ct = 0;
 	char const assert_fail_fmt[] =
-	\	"COMPLEX ASSERTION FAILURE in %s line %u:  %s\n";
+		"COMPLEX ASSERTION FAILURE in %s line %u:  %s\n";
 	_EOInclude_;
 
 main = {