diff --git a/panda/src/linmath/lmatrix3_src.cxx b/panda/src/linmath/lmatrix3_src.cxx
index 6906aa503f..994056de79 100644
--- a/panda/src/linmath/lmatrix3_src.cxx
+++ b/panda/src/linmath/lmatrix3_src.cxx
@@ -353,7 +353,7 @@ bool FLOATNAME(LMatrix3)::
 almost_equal(const FLOATNAME(LMatrix3) &other, FLOATTYPE threshold) const {
   TAU_PROFILE("bool LMatrix3::almost_equal(const LMatrix3 &, FLOATTYPE)", " ", TAU_USER);
 #ifdef HAVE_EIGEN
-  return ((_m - other._m).cwiseAbs().maxCoeff() < NEARLY_ZERO(FLOATTYPE));
+  return ((_m - other._m).cwiseAbs().maxCoeff() < threshold);
 #else
   return (IS_THRESHOLD_EQUAL((*this)(0, 0), other(0, 0), threshold) &&
           IS_THRESHOLD_EQUAL((*this)(0, 1), other(0, 1), threshold) &&
diff --git a/panda/src/linmath/lmatrix4_src.cxx b/panda/src/linmath/lmatrix4_src.cxx
index 4123fd17aa..75775f9217 100644
--- a/panda/src/linmath/lmatrix4_src.cxx
+++ b/panda/src/linmath/lmatrix4_src.cxx
@@ -296,7 +296,7 @@ bool FLOATNAME(LMatrix4)::
 almost_equal(const FLOATNAME(LMatrix4) &other, FLOATTYPE threshold) const {
   TAU_PROFILE("bool LMatrix4::almost_equal(const LMatrix4 &, FLOATTYPE)", " ", TAU_USER);
 #ifdef HAVE_EIGEN
-  return ((_m - other._m).cwiseAbs().maxCoeff() < NEARLY_ZERO(FLOATTYPE));
+  return ((_m - other._m).cwiseAbs().maxCoeff() < threshold);
 #else
   return (IS_THRESHOLD_EQUAL((*this)(0, 0), other(0, 0), threshold) &&
           IS_THRESHOLD_EQUAL((*this)(0, 1), other(0, 1), threshold) &&