diff --git a/src/ir.cpp b/src/ir.cpp
index a45455ad39e03c5354ed1b7883c547628db85502..81b7f14f84db7a0bdd78ff8eb0a0f1151bcaacc8 100644
--- a/src/ir.cpp
+++ b/src/ir.cpp
@@ -26718,7 +26718,7 @@ static IrInstGen *ir_analyze_instruction_float_cast(IrAnalyze *ira, IrInstSrcFlo
     }
 
     if (instr_is_comptime(target) || dest_type->id == ZigTypeIdComptimeFloat) {
-        return ir_implicit_cast2(ira, &instruction->target->base, target, dest_type);
+        return ir_analyze_widen_or_shorten(ira, &instruction->target->base, target, dest_type);
     }
 
     if (target->value->type->id != ZigTypeIdFloat) {
diff --git a/test/stage1/behavior/cast.zig b/test/stage1/behavior/cast.zig
index 77cdacc307a860a98d45c29f281b8d33b84000b3..4325b0b9e40788824a9e74f9bad6239ea803da40 100644
--- a/test/stage1/behavior/cast.zig
+++ b/test/stage1/behavior/cast.zig
@@ -384,6 +384,19 @@ test "@intCast i32 to u7" {
     expect(z == 0xff);
 }
 
+test "@floatCast cast down" {
+    {
+        var double: f64 = 0.001534;
+        var single = @floatCast(f32, double);
+        expect(@TypeOf(single) == f32);
+    }
+    {
+        const double: f64 = 0.001534;
+        const single = @floatCast(f32, double);
+        expect(@TypeOf(single) == f32);
+    }
+}
+
 test "implicit cast undefined to optional" {
     expect(MakeType(void).getNull() == null);
     expect(MakeType(void).getNonNull() != null);