diff --git a/build/win32/vs8/gobject.vcproj b/build/win32/vs8/gobject.vcproj
index 3202cb490..02158ca39 100644
--- a/build/win32/vs8/gobject.vcproj
+++ b/build/win32/vs8/gobject.vcproj
@@ -122,7 +122,7 @@
 				Name="VCCLCompilerTool"
 				WholeProgramOptimization="false"
 				AdditionalIncludeDirectories="../../..,../../../glib"
-				PreprocessorDefinitions="WIN32;NDEBUG;_WINDOWS;_USRDLL;GOBJECT_EXPORTS;GOBJECT_COMPILATION;HAVE_CONFIG_H;G_LOG_DOMAIN=\"Glib-GObject\";G_DISABLE_DEPRECATED"
+				PreprocessorDefinitions="WIN32;NDEBUG;_WINDOWS;_USRDLL;GOBJECT_COMPILATION;HAVE_CONFIG_H;G_LOG_DOMAIN=\"Glib-GObject\";G_DISABLE_DEPRECATED"
 				RuntimeLibrary="2"
 				UsePrecompiledHeader="0"
 				WarningLevel="3"
diff --git a/build/win32/vs8/gthread.vcproj b/build/win32/vs8/gthread.vcproj
index 9d0718a7e..aa430f9ef 100644
--- a/build/win32/vs8/gthread.vcproj
+++ b/build/win32/vs8/gthread.vcproj
@@ -122,7 +122,7 @@
 			<Tool
 				Name="VCCLCompilerTool"
 				AdditionalIncludeDirectories="../../..,../../../glib"
-				PreprocessorDefinitions="WIN32;NDEBUG;_WINDOWS;_USRDLL;GTHREAD_EXPORTS;HAVE_CONFIG_H;G_LOG_DOMAIN=\&quot;GThread\&quot;;G_DISABLE_DEPRECATED"
+				PreprocessorDefinitions="WIN32;NDEBUG;_WINDOWS;_USRDLL;HAVE_CONFIG_H;G_LOG_DOMAIN=\&quot;GThread\&quot;;G_DISABLE_DEPRECATED"
 				RuntimeLibrary="2"
 				UsePrecompiledHeader="0"
 				WarningLevel="3"