diff --git a/scan.pl b/scan.pl
index ce93745..1fcf872 100755
--- a/scan.pl
+++ b/scan.pl
@@ -545,6 +545,7 @@ sub mann_kendall_sens_slope {
 my %unit2dec = (
     'CPU%' => 3,
     'nanoseconds' => 2,
+    'seconds' => 3,
     );
 
 sub show {
@@ -912,11 +913,13 @@ sub single {
         elsif(/^confopts: (.*)/) {
             push @confopts, $1;
         }
-        elsif(/^(.*) configure non-debug/) {
+        elsif(/^(.?*) (\d+|) *configure non-debug/) {
             $buildstart = $1;
+            $buildstartns = $2;
         }
-        elsif(/^(.*) make -C tests/) {
+        elsif(/^(.?*) (\d+|) *make -C tests/) {
             $builddone = $1;
+            $builddonens = $2;
         }
         elsif(/^structs: (.*)\t(\d+)\t\d*/) {
             my ($struct, $size) = ($1,$2);
@@ -1020,9 +1023,11 @@ sub single {
     }
 
     if($buildstart && $builddone) {
-        # get the build time
+        # get the build time in seconds
         $buildtime{$scan} = `date +%s -d "$builddone"` -
             `date +%s -d "$buildstart"`;
+        # then adjust with the nanoseconds, when available:
+        $buildtime{$scan} += ($builddonens - $buildstartns) / 1000000000;
     }
 }
 
diff --git a/single.sh b/single.sh
index 2cc586c..9a8607f 100755
--- a/single.sh
+++ b/single.sh
@@ -45,7 +45,7 @@ pahole lib/.libs/libcurl.a -C Curl_easy,Curl_multi,connectdata -s | sed 's/^/str
 date "$PREF make clean again"
 make clean >makeclean.log 2>&1
 
-date "$PREF configure non-debug"
+date "$PREF %N configure non-debug"
 RELOPTS="--enable-unity --disable-shared --enable-ipv6 --with-gssapi --enable-werror --with-nghttp2 --with-openssl --with-ngtcp2 --with-nghttp3 --with-libssh2 --with-test-caddy=$HOME/caddy/caddy_linux_amd64 --enable-ssls-export --enable-httpsrr --with-test-nghttpx=$HOME/build-nghttp2/bin/nghttpx --with-backtrace --enable-ntlm --enable-smb --enable-proxy-http3 --enable-httpsig"
 
 ./configure $RELOPTS >>configure.log 2>&1
@@ -54,7 +54,7 @@ echo "confopts: $RELOPTS";
 date "$PREF make non-debug"
 make V=1 -sj20 >>make.log 2>&1
 
-date "$PREF make -C tests"
+date "$PREF %N make -C tests"
 make -C tests -sj20 >maketests.log 2>&1
 
 date "$PREF curl -V"