diff --git a/Changes b/Changes
index 93da69f87..bc5536082 100644
--- a/Changes
+++ b/Changes
@@ -169,10 +169,11 @@ Verilator 5.047 devel
 * Fix modification of members of object with const handle (#7433). [Kamil Danecki, Antmicro Ltd.]
 * Fix `dist` under implication in constraints (#7440) (#7442). [Alex Solomatnikov] [Yilou Wang]
 * Fix std::randomize `inside` corrupting class-member queue operand (#7449) (#7456). [Yilou Wang]
+* Fix module parameters not re-evaluated upon instantiation (#7463) (#7477). [em2machine]
 * Fix function-in-constraint internal error on bare port return (#7473) (#7480). [Yilou Wang]
 * Fix access to static variable inside function (#7474) (#7475). [Alex Zhou]
+* Fix multiple inclusion of verilated_std.sv (#7478). [Larry Doolittle]
 * Fix std::randomize inside {typedef array} internal error (#7481). [Yilou Wang]
-* Fix module parameters not re-evaluated upon instantiation (#7463) (#7477). [em2machine]
 
 
 Verilator 5.046 2026-02-28
diff --git a/include/verilated_std.sv b/include/verilated_std.sv
index a8ea20692..7dfd98f31 100644
--- a/include/verilated_std.sv
+++ b/include/verilated_std.sv
@@ -26,6 +26,9 @@
 // The following keywords from this file are hardcoded for detection in the parser:
 // "mailbox", "process", "randomize", "semaphore", "std"
 
+`ifndef VERILATOR_STD_SV_
+`define VERILATOR_STD_SV_
+
 // verilator lint_off DECLFILENAME
 // verilator lint_off TIMESCALEMOD
 // verilator lint_off UNUSEDSIGNAL
@@ -292,3 +295,5 @@ inline bool VlClassRef<`systemc_class_name>::operator<(const VlClassRef<`systemc
   } vl_cross_type_options_t;
 
 endpackage
+
+`endif  // Guard