diff --git a/src/testlib/qtestcase.cpp b/src/testlib/qtestcase.cpp
index d03eb4c2c0d..adf4b9e1efa 100644
--- a/src/testlib/qtestcase.cpp
+++ b/src/testlib/qtestcase.cpp
@@ -75,6 +75,7 @@
 #include <QtTest/private/qtestutil_macos_p.h>
 #endif
 
+#include <cmath>
 #include <numeric>
 #include <algorithm>
 
@@ -2443,7 +2444,16 @@ bool QTest::qCompare(float const &t1, float const &t2, const char *actual, const
 bool QTest::qCompare(double const &t1, double const &t2, const char *actual, const char *expected,
                     const char *file, int line)
 {
-    return compare_helper(qFuzzyCompare(t1, t2), "Compared doubles are not the same (fuzzy compare)",
+    bool equal = false;
+    int cl1 = std::fpclassify(t1);
+    int cl2 = std::fpclassify(t2);
+    if (cl1 == FP_INFINITE)
+        equal = ((t1 < 0) == (t2 < 0)) && cl2 == FP_INFINITE;
+    else if (cl1 == FP_NAN)
+        equal = (cl2 == FP_NAN);
+    else
+        equal = qFuzzyCompare(t1, t2);
+    return compare_helper(equal, "Compared doubles are not the same (fuzzy compare)",
                           toString(t1), toString(t2), actual, expected, file, line);
 }