diff --git a/test_problems/cathermo/testIAPWSPres/output_blessed.txt b/test_problems/cathermo/testIAPWSPres/output_blessed.txt
index 6d7237bf6..87a3427f3 100644
--- a/test_problems/cathermo/testIAPWSPres/output_blessed.txt
+++ b/test_problems/cathermo/testIAPWSPres/output_blessed.txt
@@ -20,7 +20,7 @@ psat_est(314) = 7675.46
 psat_est(373.15) = 101007
 psat_est(647.25) = 2.2093e+07
 beta    =       1.000020308917
-betaNum =        1.00002030868
+betaNum =         1.0000203087
 alpha =    0.003333433139236
 beta    =       1265.572840683
 betaNum =        1265.46651311
diff --git a/test_problems/cathermo/testIAPWSPres/testPress.cpp b/test_problems/cathermo/testIAPWSPres/testPress.cpp
index 74f14b1ae..a813b9c7d 100644
--- a/test_problems/cathermo/testIAPWSPres/testPress.cpp
+++ b/test_problems/cathermo/testIAPWSPres/testPress.cpp
@@ -134,7 +134,7 @@ int main () {
 
     rho = water->density(T,pres);
     double betaNum = dpdt * 18.015268 /( 8.314371E3 * rho);
-    printf("betaNum = %20.12g\n", betaNum);
+    printf("betaNum = %20.11g\n", betaNum);
 
     double alpha = water->coeffThermExp();
     printf("alpha = %20.13g\n", alpha);