diff --git a/internal/configs/provider.go b/internal/configs/provider.go
index 8beb67b4d7..dc0835fed7 100644
--- a/internal/configs/provider.go
+++ b/internal/configs/provider.go
@@ -179,7 +179,7 @@ func (p *Provider) decodeStaticFields(eval *StaticEvaluator) hcl.Diagnostics {
 			return evalContext, diags.Append(evalDiags)
 		}
 
-		forVal, evalDiags := evalchecks.EvaluateForEachExpression(p.ForEach, forEachRefsFunc)
+		forVal, evalDiags := evalchecks.EvaluateForEachExpression(p.ForEach, forEachRefsFunc, nil)
 		diags = append(diags, evalDiags.ToHCL()...)
 		if evalDiags.HasErrors() {
 			return diags
@@ -187,16 +187,8 @@ func (p *Provider) decodeStaticFields(eval *StaticEvaluator) hcl.Diagnostics {
 
 		p.Instances = make(map[addrs.InstanceKey]instances.RepetitionData)
 		for k, v := range forVal {
-			// Convert boolean keys to strings
-			var keyStr string
-			switch k := k.(type) {
-			case bool:
-				keyStr = fmt.Sprintf("%v", k)
-			default:
-				keyStr = fmt.Sprintf("%v", k)
-			}
-			p.Instances[addrs.StringKey(keyStr)] = instances.RepetitionData{
-				EachKey:   cty.StringVal(keyStr),
+			p.Instances[addrs.StringKey(k)] = instances.RepetitionData{
+				EachKey:   cty.StringVal(k),
 				EachValue: v,
 			}
 		}