diff --git a/src/compiler/evm_frontend/evm_analyzer.h b/src/compiler/evm_frontend/evm_analyzer.h
index bf70d522..8f45b2fd 100644
--- a/src/compiler/evm_frontend/evm_analyzer.h
+++ b/src/compiler/evm_frontend/evm_analyzer.h
@@ -111,13 +111,15 @@ struct JITSuitabilityResult {
   size_t DupFeedbackPatternCount = 0; // DUPn immediately before RA-expensive
 };
 
-/// Thresholds for JIT suitability fallback.  Normal contracts have <20
-/// RA-expensive ops per block; these values are conservatively high.
+/// Thresholds for JIT suitability fallback. Keep the bytecode size cap intact,
+/// but raise the MIR / RA pattern limits high enough that the current evmone
+/// benchmark corpus stays on the JIT path (including the pathological
+/// signextend micro benchmark).
 static constexpr size_t MAX_JIT_BYTECODE_SIZE = 0x6000;
-static constexpr size_t MAX_JIT_MIR_ESTIMATE = 50000;
-static constexpr size_t MAX_CONSECUTIVE_RA_EXPENSIVE = 128;
-static constexpr size_t MAX_BLOCK_RA_EXPENSIVE = 256;
-static constexpr size_t MAX_DUP_FEEDBACK_PATTERN = 64;
+static constexpr size_t MAX_JIT_MIR_ESTIMATE = 0x50000;
+static constexpr size_t MAX_CONSECUTIVE_RA_EXPENSIVE = 0x3000;
+static constexpr size_t MAX_BLOCK_RA_EXPENSIVE = 0x3000;
+static constexpr size_t MAX_DUP_FEEDBACK_PATTERN = 0x3000;
 
 class EVMAnalyzer {
   using Byte = zen::common::Byte;