diff --git a/configure.ac b/configure.ac
index 19a8f260..08474b1b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -195,6 +195,14 @@ if test "x$enable_sigwinch" = xyes; then
   AC_DEFINE(SIGNALS_LESS, 1, [reduce impact of x-windows resize operations on top])
 fi
 
+AC_ARG_ENABLE([wide-percent],
+  AS_HELP_STRING([--enable-wide-percent], [provide extra precision under %CPU and %MEM for top]),
+  [enable_wide_percent=yes], []
+)
+if test "x$enable_wide_percent" = xyes; then
+  AC_DEFINE(BOOST_PERCNT, 1, [provide extra precision under %CPU and %MEM for top])
+fi
+
 DL_LIB=
 AC_ARG_ENABLE([numa],
   AS_HELP_STRING([--disable-numa], [disable NUMA/Node support in top]),
diff --git a/top/top.c b/top/top.c
index 042e5fe7..4caf6580 100644
--- a/top/top.c
+++ b/top/top.c
@@ -1564,7 +1564,7 @@ static const char *scale_pcnt (float num, int width, int justr) {
    buf[0] = '\0';
    if (Rc.zero_suppress && 0 >= num)
       goto end_justifies;
-#ifndef NOBOOST_PCNT
+#ifdef BOOST_PERCNT
    if (width >= snprintf(buf, sizeof(buf), "%#.3f", num))
       goto end_justifies;
    if (width >= snprintf(buf, sizeof(buf), "%#.2f", num))
@@ -1699,7 +1699,7 @@ static FLD_t Fieldstab[] = {
    {     0,     -1,  A_right,  SF(CPU),  L_stat    },
    {     6,     -1,  A_right,  SF(TME),  L_stat    },
    {     9,     -1,  A_right,  SF(TME),  L_stat    }, // P_TM2 slot
-#ifndef NOBOOST_PCNT
+#ifdef BOOST_PERCNT
    {     5,     -1,  A_right,  SF(RES),  L_statm   }, // P_MEM slot
 #else
    {     4,     -1,  A_right,  SF(RES),  L_statm   }, // P_MEM slot
@@ -2238,7 +2238,7 @@ static void zap_fieldstab (void) {
       Fieldstab[P_CPN].width = digits;
    }
 
-#ifndef NOBOOST_PCNT
+#ifdef BOOST_PERCNT
    Cpu_pmax = 99.9;
    Fieldstab[P_CPU].width = 5;
    if (Rc.mode_irixps && smp_num_cpus > 1 && !Thread_mode) {
diff --git a/top/top.h b/top/top.h
index 01434ed0..f327cfdb 100644
--- a/top/top.h
+++ b/top/top.h
@@ -23,6 +23,7 @@
 #include "../proc/readproc.h"
 
         /* Defines represented in configure.ac ----------------------------- */
+//#define BOOST_PERCNT            /* enable extra precision for two % fields */
 //#define NUMA_DISABLE            /* disable summary area NUMA/Nodes display */
 //#define OOMEM_ENABLE            /* enable the SuSE out-of-memory additions */
 //#define SIGNALS_LESS            /* favor reduced signal load over response */
@@ -39,7 +40,6 @@
 //#define INSP_SAVEBUF            /* preserve 'Insp_buf' contents in a file  */
 //#define INSP_SLIDE_1            /* when scrolling left/right don't move 8  */
 //#define NOBOOST_MEMS            /* disable extra precision for mem fields  */
-//#define NOBOOST_PCNT            /* disable extra precision for % fields    */
 //#define OFF_HST_HASH            /* use BOTH qsort+bsrch vs. hashing scheme */
 //#define OFF_STDIOLBF            /* disable our own stdout _IOFBF override  */
 //#define PRETEND2_5_X            /* pretend we're linux 2.5.x (for IO-wait) */