diff --git a/liquidprompt b/liquidprompt
index 9e5e9b1..766a19b 100755
--- a/liquidprompt
+++ b/liquidprompt
@@ -186,7 +186,7 @@ fi
 # get cpu number
 _lp_cpunum_Linux()
 {
-    nproc
+    grep -c '^[Pp]rocessor' /proc/cpuinfo
 }
 
 _lp_cpunum_FreeBSD()