diff --git a/src/devices/cpu/drcbec.cpp b/src/devices/cpu/drcbec.cpp
index ea0a3f08f5a..41566614233 100644
--- a/src/devices/cpu/drcbec.cpp
+++ b/src/devices/cpu/drcbec.cpp
@@ -286,7 +286,7 @@ const uint32_t drcbe_c::s_condition_map[] =
 drcbe_c::drcbe_c(drcuml_state &drcuml, device_t &device, drc_cache &cache, uint32_t flags, int modes, int addrbits, int ignorebits)
 	: drcbe_interface(drcuml, cache, device),
 		m_hash(cache, modes, addrbits, ignorebits),
-		m_map(cache, 0),
+		m_map(cache, 0xaaaaaaaa55555555),
 		m_labels(cache),
 		m_fixup_delegate(&drcbe_c::fixup_label, this)
 {
diff --git a/src/devices/cpu/drcbex64.cpp b/src/devices/cpu/drcbex64.cpp
index 2cc08888eb2..1950799624f 100644
--- a/src/devices/cpu/drcbex64.cpp
+++ b/src/devices/cpu/drcbex64.cpp
@@ -618,7 +618,7 @@ inline void drcbe_x64::emit_smart_call_m64(x86code *&dst, x86code **target)
 drcbe_x64::drcbe_x64(drcuml_state &drcuml, device_t &device, drc_cache &cache, uint32_t flags, int modes, int addrbits, int ignorebits)
 	: drcbe_interface(drcuml, cache, device),
 		m_hash(cache, modes, addrbits, ignorebits),
-		m_map(cache, 0),
+		m_map(cache, 0xaaaaaaaa5555),
 		m_labels(cache),
 		m_log(nullptr),
 		m_sse41(false),
diff --git a/src/devices/cpu/drccache.h b/src/devices/cpu/drccache.h
index 48243a56482..5ff7045ecd8 100644
--- a/src/devices/cpu/drccache.h
+++ b/src/devices/cpu/drccache.h
@@ -72,7 +72,7 @@ private:
 	static const size_t CODEGEN_MAX_BYTES = 65536;
 
 	// minimum alignment, in bytes (must be power of 2)
-	static const size_t CACHE_ALIGNMENT = 8;
+	static const size_t CACHE_ALIGNMENT = alignof(std::max_align_t);
 
 	// largest permanent allocation we allow
 	static const size_t MAX_PERMANENT_ALLOC = 1024;