diff --git a/fpu/softfloat.c b/fpu/softfloat.c
index 8401b37bd4..b39c0c6fbb 100644
--- a/fpu/softfloat.c
+++ b/fpu/softfloat.c
@@ -1525,7 +1525,7 @@ FLOAT_TO_UINT(64, 64)
 
 static FloatParts int_to_float(int64_t a, float_status *status)
 {
-    FloatParts r;
+    FloatParts r = {};
     if (a == 0) {
         r.cls = float_class_zero;
         r.sign = false;