diff --git a/Makefile b/Makefile
index 240acd41a..97385178b 100644
--- a/Makefile
+++ b/Makefile
@@ -23,6 +23,10 @@ endif
 
 
 # SANITIZE *implies* DEBUG
+ifeq ($(MEMSANITIZE),1)
+        CXXFLAGS += -g3 -O0  -fsanitize=memory -fno-omit-frame-pointer -fsanitize=undefined
+        CFLAGS += -g3 -O0  -fsanitize=memory -fno-omit-frame-pointer -fsanitize=undefined
+else
 ifeq ($(SANITIZE),1)
 	CXXFLAGS += -g3 -O0  -fsanitize=address -fno-omit-frame-pointer -fsanitize=undefined 
 	CFLAGS += -g3 -O0  -fsanitize=address -fno-omit-frame-pointer -fsanitize=undefined 
@@ -36,6 +40,7 @@ else
 	CFLAGS += -O3
 endif # ifeq ($(DEBUG),1)
 endif # ifeq ($(SANITIZE),1)
+endif # ifeq ($(MEMSANITIZE),1)
 
 MAINEXECUTABLES=parse minify json2json jsonstats statisticalmodel
 TESTEXECUTABLES=jsoncheck numberparsingcheck stringparsingcheck
diff --git a/include/simdjson/common_defs.h b/include/simdjson/common_defs.h
index 059a6afec..a485e28b5 100644
--- a/include/simdjson/common_defs.h
+++ b/include/simdjson/common_defs.h
@@ -64,6 +64,12 @@
 #  endif 
 #endif 
 
+#if defined(__has_feature)
+#  if (__has_feature(memory_sanitizer))
+#define LENIENT_MEM_SANITIZER __attribute__((no_sanitize("memory")))
+#  endif
+#endif
+
 #define really_inline inline __attribute__((always_inline, unused))
 #define never_inline inline __attribute__((noinline, unused))
 
@@ -83,4 +89,8 @@
 #ifndef ALLOW_SAME_PAGE_BUFFER_OVERRUN_QUALIFIER
 #define ALLOW_SAME_PAGE_BUFFER_OVERRUN_QUALIFIER
 #endif
+#ifndef LENIENT_MEM_SANITIZER
+#define LENIENT_MEM_SANITIZER
+#endif
+
 #endif // SIMDJSON_COMMON_DEFS_H
diff --git a/include/simdjson/stringparsing.h b/include/simdjson/stringparsing.h
index 588a4dba8..08632cb13 100644
--- a/include/simdjson/stringparsing.h
+++ b/include/simdjson/stringparsing.h
@@ -76,7 +76,7 @@ really_inline bool handle_unicode_codepoint(const uint8_t **src_ptr, uint8_t **d
 #include <arm_neon.h>
 #endif
 
-WARN_UNUSED ALLOW_SAME_PAGE_BUFFER_OVERRUN_QUALIFIER
+WARN_UNUSED ALLOW_SAME_PAGE_BUFFER_OVERRUN_QUALIFIER LENIENT_MEM_SANITIZER
 really_inline  bool parse_string(UNUSED const uint8_t *buf, UNUSED size_t len,
                                 ParsedJson &pj, UNUSED const uint32_t depth, UNUSED uint32_t offset) {
 #ifdef SIMDJSON_SKIPSTRINGPARSING // for performance analysis, it is sometimes useful to skip parsing
diff --git a/src/stage2_build_tape.cpp b/src/stage2_build_tape.cpp
index b3a7f3c2e..f3bf15b66 100644
--- a/src/stage2_build_tape.cpp
+++ b/src/stage2_build_tape.cpp
@@ -70,7 +70,7 @@ really_inline bool is_valid_null_atom(const uint8_t *loc) {
  * The JSON is parsed to a tape, see the accompanying tape.md file
  * for documentation.
  ***********/
-WARN_UNUSED  ALLOW_SAME_PAGE_BUFFER_OVERRUN_QUALIFIER
+WARN_UNUSED  ALLOW_SAME_PAGE_BUFFER_OVERRUN_QUALIFIER LENIENT_MEM_SANITIZER
 int unified_machine(const uint8_t *buf, size_t len, ParsedJson &pj) {
   uint32_t i = 0; // index of the structural character (0,1,2,3...)
   uint32_t idx;   // location of the structural character in the input (buf)