diff --git a/src/CalcManager/Ratpack/support.cpp b/src/CalcManager/Ratpack/support.cpp
index 36077c7e..89c14f3e 100644
--- a/src/CalcManager/Ratpack/support.cpp
+++ b/src/CalcManager/Ratpack/support.cpp
@@ -136,14 +136,7 @@ void ChangeConstants(uint32_t radix, int32_t precision)
     // in the internal BASEX radix, this is important for length calculations
     // in translating from radix to BASEX and back.
 
-    const uint32_t limit = BASEX / radix;
-    g_ratio = 0;
-    for (uint32_t digit = 1; digit < limit; digit *= radix)
-    {
-        g_ratio++;
-    }
-    if (g_ratio == 0)
-        g_ratio = 1; // g_ratio is always at least 1
+    g_ratio = static_cast<int32_t>(ceil(log2(BASEX) / log2(radix))) - 1;
 
     destroyrat(rat_nRadix);
     rat_nRadix = i32torat(radix);