diff --git a/control.cpp b/control.cpp
index c1cada8d..1f3df4db 100644
--- a/control.cpp
+++ b/control.cpp
@@ -30,7 +30,9 @@ bool mousemoved = false;
 bool actonrelease = false;
 
 bool mousepan, oldmousepan;
+#if CAP_MOUSEGRAB
 ld mouseaim_x, mouseaim_y;
+#endif
 ld mouseaim_sensitivity = 0.01;
 
 int timetowait;
@@ -561,6 +563,7 @@ void mainloopiter() {
   mousepan = (cmode & (sm::NORMAL | sm::DRAW | sm::MAP)) && DIM == 3 && mouseaim_sensitivity;
   if(mousepan != oldmousepan) {
     oldmousepan = mousepan;
+    #if CAP_MOUSEGRAB
     if(mousepan) {    
       SDL_WM_GrabInput(SDL_GRAB_ON);
       SDL_ShowCursor(SDL_DISABLE);
@@ -572,6 +575,7 @@ void mainloopiter() {
       SDL_WarpMouse(vid.xres/2, vid.yres/2);
       mouseaim_x = mouseaim_y = 0;      
       }
+    #endif
     }
 
 #if ISWEB
@@ -635,8 +639,10 @@ void mainloopiter() {
   DEBB(DF_GRAPH, ("polling for events\n"));
   
   if(DIM == 3 && !shmup::on && !rug::rugged) {
+    #if CAP_MOUSEGRAB
     View = cspin(0, 2, -mouseaim_x) * cspin(1, 2, -mouseaim_y) * View;
     mouseaim_x = mouseaim_y = 0;
+    #endif
     }
   
   if(smooth_scrolling && !shmup::on && !rug::rugged) {
diff --git a/hyper.h b/hyper.h
index b8abdeb0..1bd0a078 100644
--- a/hyper.h
+++ b/hyper.h
@@ -2591,7 +2591,10 @@ void initquickqueue();
 void quickqueue();
 int darkenedby(int c, int lev);
 extern int mousex, mousey;
-extern ld mouseaim_x, mouseaim_y, mouseaim_sensitivity;
+#if CAP_MOUSEGRAB
+extern ld mouseaim_x, mouseaim_y;
+#endif
+extern ld mouseaim_sensitivity;
 string generateHelpForItem(eItem it);
 bool graphglyph();
 extern bool hiliteclick;
diff --git a/shmup.cpp b/shmup.cpp
index 456c9448..65812412 100644
--- a/shmup.cpp
+++ b/shmup.cpp
@@ -726,11 +726,13 @@ void handleInput(int delta) {
   panspin *= d;
   panmove *= d;
   
+  #if CAP_MOUSEGRAB
   if(lctrlclick) {
     panx += mouseaim_x / 2;
     pany += mouseaim_y / 2;
     mouseaim_x = mouseaim_y = 0;
     }
+  #endif
 
   if(panx || pany || panspin || (GDIM == 3 && panmove)) {
     if(DIM == 2) {
@@ -1717,12 +1719,14 @@ void movePlayer(monster *m, int delta) {
 
   bool blown = m->blowoff > curtime;
 
+  #if CAP_MOUSEGRAB
   if(WDIM == 2 && GDIM == 3 && !lctrlclick && cpid == 0) {
     if(!stdracing) playerturn[cpid] -= mouseaim_x;
     playerturny[cpid] -= mouseaim_y;
     mouseaim_x = 0;
     mouseaim_y = 0;
     }
+  #endif
     
   if(playerturn[cpid] && canmove && !blown && WDIM == 2) {
     m->swordangle -= playerturn[cpid];
@@ -1775,11 +1779,13 @@ void movePlayer(monster *m, int delta) {
     playerturn[cpid] = mgo * SCALE * delta / 200;
     playerturny[cpid] = mturn * SCALE * delta / 200;
 
+    #if CAP_MOUSEGRAB
     if(!lctrlclick && cpid == 0) {
       playerturn[cpid] += mouseaim_x;
       playerturny[cpid] += mouseaim_y;
       mouseaim_x = mouseaim_y = 0;
       }
+    #endif
     }
   
   if(playergo[cpid] && markOrb(itOrbDash)) playergo[cpid] *= 1.5;
@@ -3295,12 +3301,18 @@ void turn(int delta) {
   if(racing::on && subscreens::split( [delta] () { turn(delta); })) return;
   
   int id = 0;
+  #if CAP_MOUSEGRAB
   ld maimx = mouseaim_x;
   ld maimy = mouseaim_y;
+  #else
+  ld maimx, maimy;
+  #endif
   
   if(dual::split( [&id, maimx, maimy, delta] () {
     turn(delta); id++; 
+    #if CAP_MOUSEGRAB
     if(id==1) mouseaim_x = maimx, mouseaim_y = maimy;
+    #endif
     })) return;
 
   if(callhandlers(false, hooks_turn, delta)) return;
diff --git a/sysconfig.h b/sysconfig.h
index c75aca7b..bbdd3a4f 100644
--- a/sysconfig.h
+++ b/sysconfig.h
@@ -194,6 +194,10 @@
 #define CAP_ORIENTATION ISMOBILE
 #endif
 
+#ifndef CAP_MOUSEGRAB
+#define CAP_MOUSEGRAB (!ISMOBILE)
+#endif
+
 #ifndef CAP_COMMANDLINE
 #define CAP_COMMANDLINE (!ISMOBILE)
 #endif