diff --git a/tests/feat-math-display-numbered.sil b/tests/feat-math-display-numbered.sil
index 469e00e4b..0216fef2e 100644
--- a/tests/feat-math-display-numbered.sil
+++ b/tests/feat-math-display-numbered.sil
@@ -4,6 +4,11 @@
 \use[module=packages.lorem]
 \use[module=packages.math]
 \font[size=11pt]
+% Side effect of #2145: the math font size now follow the current document
+% font size, so whould now be 11pt.
+% The previous behavior was an hard-coded 10 pt.
+% Restore it here, so the test passes unchanged.
+\set[parameter=math.font.size, value=10]
 % Test numbered display math for all options
 % and in all alignments
 
diff --git a/tests/feat-math-display-unnumbered.sil b/tests/feat-math-display-unnumbered.sil
index a8eecad18..399607fda 100644
--- a/tests/feat-math-display-unnumbered.sil
+++ b/tests/feat-math-display-unnumbered.sil
@@ -9,6 +9,11 @@
 % and in all alignments
 
 \begin{blockquote}
+% Side effect of #2145: the math font size now follow the current document
+% font size, so whould now be some ratio of 11pt (due to the blockquote)
+% The previous behavior was an hard-coded 10 pt.
+% Restore it here, so the test passes unchanged.
+\set[parameter=math.font.size, value=10]
 Begin justified
 \math[mode=display]{e^{i\pi} = -1}
 End justified.