diff --git a/source/renderer/FixedFunctionModelRenderer.cpp b/source/renderer/FixedFunctionModelRenderer.cpp
index 630796a6f0..7ac4068609 100644
--- a/source/renderer/FixedFunctionModelRenderer.cpp
+++ b/source/renderer/FixedFunctionModelRenderer.cpp
@@ -286,7 +286,7 @@ void FixedFunctionModelRenderer::RenderModel(int streamflags, CModel* model, voi
 	size_t numFaces = mdldef->GetNumFaces();
 
 	if (!g_Renderer.m_SkipSubmit) {
-		pglDrawRangeElementsEXT(GL_TRIANGLES, 0, (GLuint)mdldef->GetNumVertices(),
+		pglDrawRangeElementsEXT(GL_TRIANGLES, 0, (GLuint)mdldef->GetNumVertices()-1,
 					   (GLsizei)numFaces*3, GL_UNSIGNED_SHORT, m->ffmodeldef->m_Indices);
 	}
 
diff --git a/source/renderer/HWLightingModelRenderer.cpp b/source/renderer/HWLightingModelRenderer.cpp
index a097f964fb..f1d96cb953 100644
--- a/source/renderer/HWLightingModelRenderer.cpp
+++ b/source/renderer/HWLightingModelRenderer.cpp
@@ -321,7 +321,7 @@ void HWLightingModelRenderer::RenderModel(int streamflags, CModel* model, void*
 	size_t numFaces = mdldef->GetNumFaces();
 
 	if (!g_Renderer.m_SkipSubmit) {
-		pglDrawRangeElementsEXT(GL_TRIANGLES, 0, (GLuint)mdldef->GetNumVertices(),
+		pglDrawRangeElementsEXT(GL_TRIANGLES, 0, (GLuint)mdldef->GetNumVertices()-1,
 					   (GLsizei)numFaces*3, GL_UNSIGNED_SHORT, m->hwlmodeldef->m_Indices);
 	}
 
diff --git a/source/renderer/InstancingModelRenderer.cpp b/source/renderer/InstancingModelRenderer.cpp
index a94820cee8..e4b72fad2a 100644
--- a/source/renderer/InstancingModelRenderer.cpp
+++ b/source/renderer/InstancingModelRenderer.cpp
@@ -276,7 +276,7 @@ void InstancingModelRenderer::RenderModel(int streamflags, CModel* model, void*
 	size_t numFaces = mdldef->GetNumFaces();
 
 	if (!g_Renderer.m_SkipSubmit) {
-		pglDrawRangeElementsEXT(GL_TRIANGLES, 0, (GLuint)mdldef->GetNumVertices(),
+		pglDrawRangeElementsEXT(GL_TRIANGLES, 0, (GLuint)mdldef->GetNumVertices()-1,
 				(GLsizei)numFaces*3, GL_UNSIGNED_SHORT, m->imodeldef->m_Indices);
 	}
 
diff --git a/source/renderer/TransparencyRenderer.cpp b/source/renderer/TransparencyRenderer.cpp
index 82adf3c76a..7bd90589ca 100644
--- a/source/renderer/TransparencyRenderer.cpp
+++ b/source/renderer/TransparencyRenderer.cpp
@@ -372,7 +372,7 @@ void PolygonSortModelRenderer::RenderModel(int streamflags, CModel* model, void*
 	size_t numFaces = mdef->GetNumFaces();
 
 	if (!g_Renderer.m_SkipSubmit) {
-		pglDrawRangeElementsEXT(GL_TRIANGLES, 0, (GLuint)mdef->GetNumVertices(),
+		pglDrawRangeElementsEXT(GL_TRIANGLES, 0, (GLuint)mdef->GetNumVertices()-1,
 					(GLsizei)numFaces*3, GL_UNSIGNED_SHORT, psmdl->m_Indices);
 	}