diff --git a/src/libqof/qof/gnc-numeric.cpp b/src/libqof/qof/gnc-numeric.cpp
index 4002e396ec..3e74568c83 100644
--- a/src/libqof/qof/gnc-numeric.cpp
+++ b/src/libqof/qof/gnc-numeric.cpp
@@ -280,6 +280,9 @@ GncNumeric::prepare_conversion(int64_t new_denom) const
 int64_t
 GncNumeric::sigfigs_denom(unsigned figs) const noexcept
 {
+    if (m_num == 0)
+        return 1;
+
     int64_t num_abs{std::abs(m_num)};
     bool not_frac = num_abs > m_den;
     int64_t val{ not_frac ? num_abs / m_den : m_den / num_abs };
diff --git a/src/libqof/qof/gnc-rational.cpp b/src/libqof/qof/gnc-rational.cpp
index e409b84918..9c787a40c4 100644
--- a/src/libqof/qof/gnc-rational.cpp
+++ b/src/libqof/qof/gnc-rational.cpp
@@ -159,6 +159,9 @@ GncRational::prepare_conversion (GncInt128 new_denom) const
 GncInt128
 GncRational::sigfigs_denom(unsigned figs) const noexcept
 {
+    if (m_num == 0)
+        return 1;
+
     auto num_abs = m_num.abs();
     bool not_frac = num_abs > m_den;
     int64_t val{ not_frac ? num_abs / m_den : m_den / num_abs };