diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9a229c2..4e42569 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -46,7 +46,7 @@ endif()
 
 # generate header file to handle version
 configure_file(
-  "${PROJECT_SOURCE_DIR}/version.h.in" "${PROJECT_SOURCE_DIR}/version.h"
+  "${PROJECT_SOURCE_DIR}/config.h.in" "${PROJECT_SOURCE_DIR}/config.h"
   )
 
 # set buold type
diff --git a/bsd/common.h b/bsd/common.h
index fb0ff7f..58f6860 100644
--- a/bsd/common.h
+++ b/bsd/common.h
@@ -27,11 +27,6 @@
 #include <sys/sysctl.h>
 #include <sys/types.h>
 
-// Memory Sizes
-#define KILOBYTES(x) ((x)/1024)
-#define MEGABYTES(x) (KILOBYTES((x))/1024)
-#define GIGABYTES(x) (MEGABYTES((x))/1024)
-
 // CPU percentages stuff
 #define CP_USER   0
 #define CP_NICE   1
diff --git a/bsd/memory_freebsd.cc b/bsd/memory_freebsd.cc
index 50d3e11..d37f8b4 100644
--- a/bsd/memory_freebsd.cc
+++ b/bsd/memory_freebsd.cc
@@ -26,6 +26,7 @@
 #include "common.h"
 #include "memory.h"
 #include "../luts.h"
+#include "../config.h"
 
 std::string mem_string( bool use_colors = false )
 {
diff --git a/bsd/memory_openbsd.cc b/bsd/memory_openbsd.cc
index 84e29b8..ba00c6b 100644
--- a/bsd/memory_openbsd.cc
+++ b/bsd/memory_openbsd.cc
@@ -29,6 +29,7 @@
 #include "common.h"
 #include "memory.h"
 #include "../luts.h"
+#include "../config.h"
 
 std::string mem_string( bool use_colors = false )
 {
diff --git a/version.h.in b/config.h.in
similarity index 88%
rename from version.h.in
rename to config.h.in
index c46dd04..10a77b9 100644
--- a/version.h.in
+++ b/config.h.in
@@ -21,3 +21,8 @@
 #define tmux_mem_cpu_load_VERSION_MINOR @tmux-mem-cpu-load_VERSION_MINOR@
 #define tmux_mem_cpu_load_VERSION_PATCH @tmux-mem-cpu-load_VERSION_PATCH@
 #define tmux_mem_cpu_load_VERSION "@tmux-mem-cpu-load_VERSION@"
+
+// Memory Sizes
+#define KILOBYTES(x) ((x)/1024)
+#define MEGABYTES(x) (KILOBYTES((x))/1024)
+#define GIGABYTES(x) (MEGABYTES((x))/1024)
diff --git a/linux/memory.cc b/linux/memory.cc
index 42580a5..7254c5b 100644
--- a/linux/memory.cc
+++ b/linux/memory.cc
@@ -21,6 +21,7 @@
 
 #include "memory.h"
 #include "../luts.h"
+#include "../config.h"
 
 std::string mem_string( bool use_colors = false )
 {
@@ -29,17 +30,17 @@ std::string mem_string( bool use_colors = false )
   struct sysinfo sinfo;
   sysinfo(&sinfo);
 
-  unsigned int total_mem = sinfo.totalram / 1014;
-  unsigned int used_mem = total_mem - sinfo.freeram / 1024;
+  unsigned int total_mem = MEGABYTES(sinfo.totalram);
+  unsigned int used_mem = total_mem - MEGABYTES(sinfo.freeram);
   // we don't need this for now
-  //unsigned int unused_mem = sinfo.freeram / 1024;
+  //unsigned int unused_mem = MEGABYTES(sinfo.freeram);
 
   if( use_colors )
   {
     oss << mem_lut[(100 * used_mem) / total_mem];
   }
 
-  oss << used_mem / 1024 << '/' << total_mem / 1024 << "MB";
+  oss << used_mem << '/' << total_mem << "MB";
 
   if( use_colors )
   {
diff --git a/osx/memory.cc b/osx/memory.cc
index d83e5be..f9ac677 100644
--- a/osx/memory.cc
+++ b/osx/memory.cc
@@ -23,6 +23,7 @@
 
 #include "memory.h"
 #include "../luts.h"
+#include "../config.h"
 
 std::string mem_string( bool use_colors )
 {
@@ -58,16 +59,12 @@ std::string mem_string( bool use_colors )
         ) * ( int64_t )page_size;
   }
 
-  // To kilobytes
-  used_mem /= 1024;
-  total_mem /= 1024;
-
   if( use_colors )
   {
     oss << mem_lut[( 100 * used_mem ) / total_mem];
   }
 
-  oss << used_mem / 1024 << '/' << total_mem / 1024 << "MB";
+  oss << MEGABYTES(used_mem) << '/' << MEGABYTES(total_mem) << "MB";
 
   if( use_colors )
   {
diff --git a/tmux-mem-cpu-load.cpp b/tmux-mem-cpu-load.cpp
index 15d090f..7f8f312 100644
--- a/tmux-mem-cpu-load.cpp
+++ b/tmux-mem-cpu-load.cpp
@@ -23,7 +23,7 @@
 #include <cstdlib> // EXIT_SUCCESS
 
 #include "argParse/argParse.h"
-#include "version.h"
+#include "config.h"
 #include "graph.h"
 
 // Tmux color lookup tables for the different metrics.