diff --git a/src/journal/lookup3.c b/src/journal/lookup3.c
index 102d2fee18..74c80b724d 100644
--- a/src/journal/lookup3.c
+++ b/src/journal/lookup3.c
@@ -319,7 +319,7 @@ uint32_t jenkins_hashlittle( const void *key, size_t length, uint32_t initval)
      * still catch it and complain.  The masking trick does make the hash
      * noticeably faster for short strings (like English words).
      */
-#if !VALGRIND && !HAS_FEATURE_ADDRESS_SANITIZER
+#if !VALGRIND && !HAS_FEATURE_ADDRESS_SANITIZER && !HAS_FEATURE_MEMORY_SANITIZER
 
     switch(length)
     {
@@ -504,7 +504,7 @@ void jenkins_hashlittle2(
      * still catch it and complain.  The masking trick does make the hash
      * noticeably faster for short strings (like English words).
      */
-#if !VALGRIND && !HAS_FEATURE_ADDRESS_SANITIZER
+#if !VALGRIND && !HAS_FEATURE_ADDRESS_SANITIZER && !HAS_FEATURE_MEMORY_SANITIZER
 
     switch(length)
     {
@@ -680,7 +680,7 @@ uint32_t jenkins_hashbig( const void *key, size_t length, uint32_t initval)
      * still catch it and complain.  The masking trick does make the hash
      * noticeably faster for short strings (like English words).
      */
-#if !VALGRIND && !HAS_FEATURE_ADDRESS_SANITIZER
+#if !VALGRIND && !HAS_FEATURE_ADDRESS_SANITIZER && !HAS_FEATURE_MEMORY_SANITIZER
 
     switch(length)
     {