diff --git a/Visual Studio Projects/B5500.vcproj b/Visual Studio Projects/B5500.vcproj
index 17b06365..d78f87c7 100644
--- a/Visual Studio Projects/B5500.vcproj	
+++ b/Visual Studio Projects/B5500.vcproj	
@@ -41,7 +41,7 @@
 				Name="VCCLCompilerTool"
 				Optimization="0"
 				AdditionalIncludeDirectories="./;../;../slirp;../slirp_glue;../slirp_glue/qemu;../slirp_glue/qemu/win32/include;../../windows-build/include;;../../windows-build/include/SDL2"
-				PreprocessorDefinitions="_CRT_NONSTDC_NO_WARNINGS;SIM_BUILD_TOOL=simh-Visual-Studio-Project;_CRT_NONSTDC_NO_WARNINGS;_CRT_SECURE_NO_WARNINGS;_WINSOCK_DEPRECATED_NO_WARNINGS;USE_SIM_CARD;SIM_NEED_GIT_COMMIT_ID;HAVE_PCRE_H;PCRE_STATIC"
+				PreprocessorDefinitions="USE_INT64;_CRT_NONSTDC_NO_WARNINGS;SIM_BUILD_TOOL=simh-Visual-Studio-Project;_CRT_SECURE_NO_WARNINGS;_WINSOCK_DEPRECATED_NO_WARNINGS;USE_SIM_CARD;SIM_NEED_GIT_COMMIT_ID;HAVE_PCREPOSIX_H;PCRE_STATIC"
 				KeepComments="false"
 				BasicRuntimeChecks="0"
 				RuntimeLibrary="1"
@@ -126,7 +126,7 @@
 				OmitFramePointers="true"
 				WholeProgramOptimization="true"
 				AdditionalIncludeDirectories="./;../;../slirp;../slirp_glue;../slirp_glue/qemu;../slirp_glue/qemu/win32/include;../../windows-build/include;;../../windows-build/include/SDL2"
-				PreprocessorDefinitions="_CRT_NONSTDC_NO_WARNINGS;SIM_BUILD_TOOL=simh-Visual-Studio-Project;_CRT_NONSTDC_NO_WARNINGS;_CRT_SECURE_NO_WARNINGS;_WINSOCK_DEPRECATED_NO_WARNINGS;USE_SIM_CARD;SIM_NEED_GIT_COMMIT_ID;HAVE_PCRE_H;PCRE_STATIC"
+				PreprocessorDefinitions="USE_INT64;_CRT_NONSTDC_NO_WARNINGS;SIM_BUILD_TOOL=simh-Visual-Studio-Project;_CRT_SECURE_NO_WARNINGS;_WINSOCK_DEPRECATED_NO_WARNINGS;USE_SIM_CARD;SIM_NEED_GIT_COMMIT_ID;HAVE_PCREPOSIX_H;PCRE_STATIC"
 				StringPooling="true"
 				RuntimeLibrary="0"
 				EnableFunctionLevelLinking="true"