diff --git a/internal/llm/provider/anthropic.go b/internal/llm/provider/anthropic.go
index 86f483f649a61dca2887ee7d656a73c0769647af..03d96fb249785f721a1c6b42c304ebf17e9d61c4 100644
--- a/internal/llm/provider/anthropic.go
+++ b/internal/llm/provider/anthropic.go
@@ -59,7 +59,7 @@ func newAnthropicClient(opts providerClientOptions) AnthropicClient {
 func (a *anthropicClient) convertMessages(messages []message.Message) (anthropicMessages []anthropic.MessageParam) {
 	for i, msg := range messages {
 		cache := false
-		if len(messages)-3 > i {
+		if i > len(messages)-3 {
 			cache = true
 		}
 		switch msg.Role {
diff --git a/internal/llm/tools/patch.go b/internal/llm/tools/patch.go
index 0f879462caf833fd121600153f8b70ff2c85c898..92eab69297a2513530a84a99cf411dc50cc4e359 100644
--- a/internal/llm/tools/patch.go
+++ b/internal/llm/tools/patch.go
@@ -169,7 +169,7 @@ func (p *patchTool) Run(ctx context.Context, call ToolCall) (ToolResponse, error
 		return NewTextErrorResponse(fmt.Sprintf("failed to parse patch: %s", err)), nil
 	}
 
-	if fuzz > 0 {
+	if fuzz > 3 {
 		return NewTextErrorResponse(fmt.Sprintf("patch contains fuzzy matches (fuzz level: %d). Please make your context lines more precise", fuzz)), nil
 	}