diff --git a/reactos/lib/sdk/crt/math/i386/atan_asm.s b/reactos/lib/sdk/crt/math/i386/atan_asm.s
index 6b21e2d49da..06cb7b850df 100644
--- a/reactos/lib/sdk/crt/math/i386/atan_asm.s
+++ b/reactos/lib/sdk/crt/math/i386/atan_asm.s
@@ -14,9 +14,6 @@
 /* FUNCTIONS ***************************************************************/
 
 _atan:
-        push    ebp
-        mov     ebp,esp            
-        fld     qword ptr [ebp+8]   
-        fpatan                      
-        pop     ebp
+        fld     qword ptr [esp+4]
+        fpatan
         ret
diff --git a/reactos/lib/sdk/crt/math/i386/log10_asm.s b/reactos/lib/sdk/crt/math/i386/log10_asm.s
index 6179f6221a2..624f1a12e61 100644
--- a/reactos/lib/sdk/crt/math/i386/log10_asm.s
+++ b/reactos/lib/sdk/crt/math/i386/log10_asm.s
@@ -15,11 +15,8 @@
 /* FUNCTIONS ***************************************************************/
 
 _log10:
-        push    ebp
-        mov     ebp,esp            
-        fld     qword ptr [ebp+8]   
-        fldlg2  
-        fyl2x                    
-        pop     ebp
+        fld     qword ptr [esp+4]
+        fldlg2
+        fyl2x
         ret