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-rw-r--r--src/var.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/var.c b/src/var.c
index 3f10c46..a7791eb 100644
--- a/src/var.c
+++ b/src/var.c
@@ -232,7 +232,7 @@ setvar(const char *name, const char *val, int flags)
 	INTOFF;
 	p = mempcpy(nameeq = ckmalloc(namelen + vallen + 2), name, namelen);
 	*p++ = '\0';
-	if (vallen) {
+	if (val) {
 		p[-1] = '=';
 		p = mempcpy(p, val, vallen);
 	}