diff --git a/common/opengl.h b/common/opengl.h
index 731a444d..855f4269 100755
--- a/common/opengl.h
+++ b/common/opengl.h
@@ -451,8 +451,6 @@ typedef ptrdiff_t GLsizeiptrARB;
 #endif
 
 // GL_ARB_vertex_buffer_object
-#ifndef GL_ARB_vertex_buffer_object
-#define GL_ARB_vertex_buffer_object 1
 typedef void (APIENTRY *GLBINDBUFFERARBPROC) (GLenum target, GLuint buffer);
 typedef void (APIENTRY *GLDELETEBUFFERSARBPROC) (GLsizei n, const GLuint *buffers);
 typedef void (APIENTRY *GLGENBUFFERSARBPROC) (GLsizei n, GLuint *buffers);
@@ -464,7 +462,6 @@ typedef GLvoid* (APIENTRY *GLMAPBUFFERARBPROC) (GLenum target, GLenum access);
 typedef GLboolean (APIENTRY *GLUNMAPBUFFERARBPROC) (GLenum target);
 typedef void (APIENTRY *GLGETBUFFERPARAMETERIVARBPROC) (GLenum target, GLenum pname, GLint *params);
 typedef void (APIENTRY *GLGETBUFFERPOINTERVARBPROC) (GLenum target, GLenum pname, GLvoid* *params);
-#endif
 
 // =============================================================================
 // OpenGL extern declarations
diff --git a/linux/dialogs.cpp b/linux/dialogs.cpp
index e6210be5..51d7dc99 100644
--- a/linux/dialogs.cpp
+++ b/linux/dialogs.cpp
@@ -643,20 +643,12 @@ int aboutdlg_execute(void* param)
 	else
 		strcat(info, "No.\n");
 
-	strcat(info, "Compiled Vertex Arrays: ");
-	if (GL_HasCompiledVertexArrays())
+	strcat(info, "Vertex Buffer Objects: ");
+	if (GL_HasVertexBufferObject())
 		strcat(info, "Supported.\n");
 	else
 		strcat(info, "Not supported.\n");
 
-	strcat(info, "Multitexturing: ");
-	if (GL_GetMultiTextures() > 1)
-	{
-		sprintf(buf, "Supported, %i texture units.\n", GL_GetMultiTextures());
-		strcat(info, buf);
-	}
-	else
-		strcat(info, "Not supported.\n");
 	glGetIntegerv(GL_MAX_TEXTURE_SIZE, &value);
 	sprintf(buf, "Maximum texture size: %ix%i", value, value);
 	strcat(info, buf);