diff --git a/lib/checkother.cpp b/lib/checkother.cpp
index a31339ab9..425db09d2 100644
--- a/lib/checkother.cpp
+++ b/lib/checkother.cpp
@@ -593,7 +593,11 @@ void CheckOther::checkRedundantAssignment()
             if (tok == writtenArgumentsEnd)
                 writtenArgumentsEnd = 0;
 
-            if (tok->str() == "{" && tok->strAt(-1) != "{" && tok->strAt(-1) != "=" && tok->strAt(-4) != "case" && tok->strAt(-3) != "default") { // conditional or non-executable inner scope: Skip it and reset status
+            if (tok->str() == "?" && tok->astOperand2()) {
+                tok = Token::findsimplematch(tok->astOperand2(), ";");
+                varAssignments.clear();
+                memAssignments.clear();
+            } else if (tok->str() == "{" && tok->strAt(-1) != "{" && tok->strAt(-1) != "=" && tok->strAt(-4) != "case" && tok->strAt(-3) != "default") { // conditional or non-executable inner scope: Skip it and reset status
                 tok = tok->link();
                 varAssignments.clear();
                 memAssignments.clear();
diff --git a/test/testother.cpp b/test/testother.cpp
index 46740bf29..caaa6f3ac 100644
--- a/test/testother.cpp
+++ b/test/testother.cpp
@@ -5591,6 +5591,12 @@ private:
               "}");
         ASSERT_EQUALS("", errout.str());
 
+        // #5964
+        check("void func(char *buffer, const char *format, int precision, unsigned value) {\n"
+              "    (precision < 0) ? sprintf(buffer, format, value) : sprintf(buffer, format, precision, value);\n"
+              "}");
+        ASSERT_EQUALS("", errout.str());
+
         // don't crash
         check("struct data {\n"
               "  struct { int i; } fc;\n"