diff --git a/src/zmalloc.h b/src/zmalloc.h
index 8079fb5319a0e568b8d64e0bc44c3c5117e3614b..ff555619e5f811edbdc37413ca1f782616570794 100644
--- a/src/zmalloc.h
+++ b/src/zmalloc.h
@@ -38,7 +38,7 @@
 #if defined(USE_TCMALLOC)
 #define ZMALLOC_LIB ("tcmalloc-" __xstr(TC_VERSION_MAJOR) "." __xstr(TC_VERSION_MINOR))
 #include <google/tcmalloc.h>
-#if TC_VERSION_MAJOR >= 1 && TC_VERSION_MINOR >= 6
+#if (TC_VERSION_MAJOR == 1 && TC_VERSION_MINOR >= 6) || (TC_VERSION_MAJOR > 1)
 #define HAVE_MALLOC_SIZE 1
 #define zmalloc_size(p) tc_malloc_size(p)
 #else
@@ -49,7 +49,7 @@
 #define ZMALLOC_LIB ("jemalloc-" __xstr(JEMALLOC_VERSION_MAJOR) "." __xstr(JEMALLOC_VERSION_MINOR) "." __xstr(JEMALLOC_VERSION_BUGFIX))
 #define JEMALLOC_MANGLE
 #include <jemalloc/jemalloc.h>
-#if JEMALLOC_VERSION_MAJOR >= 2 && JEMALLOC_VERSION_MINOR >= 1
+#if (JEMALLOC_VERSION_MAJOR == 2 && JEMALLOC_VERSION_MINOR >= 1) || (JEMALLOC_VERSION_MAJOR > 2)
 #define HAVE_MALLOC_SIZE 1
 #define zmalloc_size(p) JEMALLOC_P(malloc_usable_size)(p)
 #else