diff --git a/lib/mathlib.cpp b/lib/mathlib.cpp
index a6b63ac85..7c0071bf5 100644
--- a/lib/mathlib.cpp
+++ b/lib/mathlib.cpp
@@ -1280,6 +1280,8 @@ bool MathLib::isDigitSeparator(const std::string& iCode, std::string::size_type
         case '~':
         case '=':
             return true;
+        case '\'':
+            return isDigitSeparator(iCode, i);
         default:
             return false;
         }
diff --git a/test/testmathlib.cpp b/test/testmathlib.cpp
index d47600f9f..cf6b7f7a6 100644
--- a/test/testmathlib.cpp
+++ b/test/testmathlib.cpp
@@ -1145,7 +1145,7 @@ private:
         ASSERT_THROW(MathLib::normalizeCharacterLiteral("\\c"), InternalError);
     }
 
-    void CPP14DigitSeparators() { // Ticket #7137
+    void CPP14DigitSeparators() { // Ticket #7137, #7565
         ASSERT(MathLib::isDigitSeparator("'", 0) == false);
         ASSERT(MathLib::isDigitSeparator("123'0;", 3));
         ASSERT(MathLib::isDigitSeparator("foo(1'2);", 5));
@@ -1160,6 +1160,7 @@ private:
         ASSERT(MathLib::isDigitSeparator("if (120|1'2) { char c = 'c'; }", 9));
         ASSERT(MathLib::isDigitSeparator("if (120%1'2) { char c = 'c'; }", 24) == false);
         ASSERT(MathLib::isDigitSeparator("if (120%1'2) { char c = 'c'; }", 26) == false);
+        ASSERT(MathLib::isDigitSeparator("0b0000001'0010'01110", 14));
     }
 };