diff --git a/sys/include/sat.h b/sys/include/sat.h
index 6251b43ae..416241f59 100644
--- a/sys/include/sat.h
+++ b/sys/include/sat.h
@@ -106,3 +106,4 @@ int satval(SATSolve *, int);
 void satfree(SATSolve *);
 void satreset(SATSolve *);
 int satget(SATSolve *, int, int *, int);
+void satvafix(va_list);
diff --git a/sys/src/cmd/forp/logic.c b/sys/src/cmd/forp/logic.c
index b266e3bca..542065074 100644
--- a/sys/src/cmd/forp/logic.c
+++ b/sys/src/cmd/forp/logic.c
@@ -46,6 +46,7 @@ satandv(SATSolve *sat, ...)
 	va_list va;
 	
 	va_start(va, sat);
+	satvafix(va);
 	r = satand1(sat, (int*)va, -1);
 	va_end(va);
 	return r;
@@ -90,6 +91,7 @@ satorv(SATSolve *sat, ...)
 	int r;
 	
 	va_start(va, sat);
+	satvafix(va);
 	r = sator1(sat, (int*)va, -1);
 	va_end(va);
 	return r;
@@ -267,6 +269,7 @@ satlogicv(SATSolve *sat, u64int op, ...)
 	int r;
 	
 	va_start(va, op);
+	satvafix(va);
 	r = satlogic1(sat, op, (int*)va, -1);
 	va_end(va);
 	return r;
diff --git a/sys/src/libsat/satadd.c b/sys/src/libsat/satadd.c
index 3a0cf0c3a..e10dd8346 100644
--- a/sys/src/libsat/satadd.c
+++ b/sys/src/libsat/satadd.c
@@ -217,6 +217,21 @@ satadd1(SATSolve *s, int *a, int n)
 	return s;
 }
 
+void
+satvafix(va_list va)
+{
+	int *d;
+	uintptr *s;
+
+	if(sizeof(int)==sizeof(uintptr)) return;
+	d = (int *) va;
+	s = (uintptr *) va;
+	do
+		*d++ = *s;
+	while((int)*s++ != 0);
+		
+}
+
 SATSolve *
 sataddv(SATSolve *s, ...)
 {
@@ -224,6 +239,7 @@ sataddv(SATSolve *s, ...)
 	
 	va_start(va, s);
 	/* horrible hack */
+	satvafix(va);
 	s = satadd1(s, (int*)va, -1);
 	va_end(va);
 	return s;
diff --git a/sys/src/libsat/satrange.c b/sys/src/libsat/satrange.c
index 76caa5713..c202a8fc1 100644
--- a/sys/src/libsat/satrange.c
+++ b/sys/src/libsat/satrange.c
@@ -62,6 +62,7 @@ satrangev(SATSolve *s, int min, int max, ...)
 	
 	va_start(va, max);
 	/* horrible hack */
+	satvafix(va);
 	s = satrange1(s, (int*)va, -1, min, max);
 	va_end(va);
 	return s;