diff --git a/include/QF/model.h b/include/QF/model.h
index 7d5287b2f..c393662de 100644
--- a/include/QF/model.h
+++ b/include/QF/model.h
@@ -279,15 +279,9 @@ typedef struct {
 } maliasskindesc_t;
 
 typedef struct {
-	trivertx_t			bboxmin;
-	trivertx_t			bboxmax;
-	int					frame;
-} maliasgroupframedesc_t;
-
-typedef struct {
-	int						numframes;
-	int						intervals;
-	maliasgroupframedesc_t	frames[1];
+	int					numframes;
+	int					intervals;
+	maliasframedesc_t	frames[1];
 } maliasgroup_t;
 
 typedef struct {
diff --git a/include/r_local.h b/include/r_local.h
index 072e52c5f..b8a2bda25 100644
--- a/include/r_local.h
+++ b/include/r_local.h
@@ -187,7 +187,8 @@ void R_DrawSolidClippedSubmodelPolygons (model_t *pmodel);
 void R_AddPolygonEdges (emitpoint_t *pverts, int numverts, int miplevel);
 surf_t *R_GetSurf (void);
 void R_AliasDrawModel (alight_t *plighting);
-maliasskindesc_t *R_AliasGetSkindesc (int skinnum, aliashdr_t *ahdr);
+maliasskindesc_t *R_AliasGetSkindesc (int skinnum, aliashdr_t *hdr);
+maliasframedesc_t *R_AliasGetFramedesc (int framenum, aliashdr_t *hdr);
 void R_BeginEdgeFrame (void);
 void R_ScanEdges (void);
 void D_DrawSurfaces (void);
diff --git a/libs/video/renderer/r_alias.c b/libs/video/renderer/r_alias.c
index 46f33f38a..f2fcfdc34 100644
--- a/libs/video/renderer/r_alias.c
+++ b/libs/video/renderer/r_alias.c
@@ -77,3 +77,41 @@ R_AliasGetSkindesc (int skinnum, aliashdr_t *ahdr)
 
 	return pskindesc;
 }
+
+VISIBLE maliasframedesc_t *
+R_AliasGetFramedesc (int framenum, aliashdr_t *hdr)
+{
+	float      *intervals;
+	float       fullinterval, time, targettime;
+	maliasframedesc_t *frame;
+	maliasgroup_t *group;
+	int         numframes;
+	int         i;
+
+	if ((framenum >= hdr->mdl.numframes) || (framenum < 0)) {
+		Sys_MaskPrintf (SYS_DEV, "R_AliasSetupFrame: no such frame %d\n",
+						framenum);
+		framenum = 0;
+	}
+
+	frame = &hdr->frames[framenum];
+	if (frame->type == ALIAS_SINGLE)
+		return frame;
+
+	group = (maliasgroup_t *) ((byte *) hdr + frame->frame);
+	intervals = (float *) ((byte *) hdr + group->intervals);
+	numframes = group->numframes;
+	fullinterval = intervals[numframes - 1];
+
+	time = r_realtime + currententity->syncbase;
+
+	// when loading in Mod_LoadAliasGroup, we guaranteed all interval values
+	// are positive, so we don't have to worry about division by 0
+	targettime = time - ((int) (time / fullinterval)) * fullinterval;
+
+	for (i = 0; i < (numframes - 1); i++) {
+		if (intervals[i] > targettime)
+			break;
+	}
+	return &group->frames[i];
+}
diff --git a/libs/video/renderer/sw/sw_ralias.c b/libs/video/renderer/sw/sw_ralias.c
index 0da1f3fd3..b49d860d9 100644
--- a/libs/video/renderer/sw/sw_ralias.c
+++ b/libs/video/renderer/sw/sw_ralias.c
@@ -613,43 +613,10 @@ R_AliasSetupLighting (alight_t *plighting)
 static void
 R_AliasSetupFrame (void)
 {
-	int         frame, numframes, i;
-	float		fullinterval, targettime, time;
-	float      *pintervals;
-	maliasgroup_t *paliasgroup;
+	maliasframedesc_t *frame;
 
-	frame = currententity->frame;
-	if ((frame >= pmdl->numframes) || (frame < 0)) {
-		Sys_MaskPrintf (SYS_DEV, "R_AliasSetupFrame: no such frame %d\n",
-						frame);
-		frame = 0;
-	}
-
-	if (paliashdr->frames[frame].type == ALIAS_SINGLE) {
-		r_apverts = (trivertx_t *)
-			((byte *) paliashdr + paliashdr->frames[frame].frame);
-		return;
-	}
-
-	paliasgroup = (maliasgroup_t *)
-		((byte *) paliashdr + paliashdr->frames[frame].frame);
-	pintervals = (float *) ((byte *) paliashdr + paliasgroup->intervals);
-	numframes = paliasgroup->numframes;
-	fullinterval = pintervals[numframes - 1];
-
-	time = r_realtime + currententity->syncbase;
-
-	// when loading in Mod_LoadAliasGroup, we guaranteed all interval values
-	// are positive, so we don't have to worry about division by 0
-	targettime = time - ((int) (time / fullinterval)) * fullinterval;
-
-	for (i = 0; i < (numframes - 1); i++) {
-		if (pintervals[i] > targettime)
-			break;
-	}
-
-	r_apverts = (trivertx_t *)
-		((byte *) paliashdr + paliasgroup->frames[i].frame);
+	frame = R_AliasGetFramedesc (currententity->frame, paliashdr);
+	r_apverts = (trivertx_t *) ((byte *) paliashdr + frame->frame);
 }
 
 
diff --git a/libs/video/renderer/sw32/sw32_ralias.c b/libs/video/renderer/sw32/sw32_ralias.c
index 698b243e2..48dc512c2 100644
--- a/libs/video/renderer/sw32/sw32_ralias.c
+++ b/libs/video/renderer/sw32/sw32_ralias.c
@@ -606,43 +606,10 @@ R_AliasSetupLighting (alight_t *plighting)
 static void
 R_AliasSetupFrame (void)
 {
-	int         frame;
-	int         i, numframes;
-	maliasgroup_t *paliasgroup;
-	float      *pintervals, fullinterval, targettime, time;
+	maliasframedesc_t *frame;
 
-	frame = currententity->frame;
-	if ((frame >= pmdl->numframes) || (frame < 0)) {
-		Sys_MaskPrintf (SYS_DEV, "R_AliasSetupFrame: no such frame %d\n",
-						frame);
-		frame = 0;
-	}
-
-	if (paliashdr->frames[frame].type == ALIAS_SINGLE) {
-		r_apverts = (trivertx_t *)
-			((byte *) paliashdr + paliashdr->frames[frame].frame);
-		return;
-	}
-
-	paliasgroup = (maliasgroup_t *)
-		((byte *) paliashdr + paliashdr->frames[frame].frame);
-	pintervals = (float *) ((byte *) paliashdr + paliasgroup->intervals);
-	numframes = paliasgroup->numframes;
-	fullinterval = pintervals[numframes - 1];
-
-	time = r_realtime + currententity->syncbase;
-
-	// when loading in Mod_LoadAliasGroup, we guaranteed all interval values
-	// are positive, so we don't have to worry about division by 0
-	targettime = time - ((int) (time / fullinterval)) * fullinterval;
-
-	for (i = 0; i < (numframes - 1); i++) {
-		if (pintervals[i] > targettime)
-			break;
-	}
-
-	r_apverts = (trivertx_t *)
-		((byte *) paliashdr + paliasgroup->frames[i].frame);
+	frame = R_AliasGetFramedesc (currententity->frame, paliashdr);
+	r_apverts = (trivertx_t *) ((byte *) paliashdr + frame->frame);
 }