diff --git a/source/lib/sysdep/ia32.cpp b/source/lib/sysdep/ia32.cpp
index 560732c5c3..7390b270ab 100644
--- a/source/lib/sysdep/ia32.cpp
+++ b/source/lib/sysdep/ia32.cpp
@@ -647,11 +647,12 @@ LibError ia32_get_call_target(void* ret_addr, void** target)
 	if(len >= 6 && c[6] == 0xFF && c[-5] == 0x15)
 	{
 		void* addr_of_target = *(void**)(c-4);
-		if(!debug_is_pointer_bogus(addr_of_target))
-		{
-			*target = *(void**)addr_of_target;
-			return INFO_OK;
-		}
+		// there are no meaningful checks we can perform: we're called from
+		// the stack trace code, so ring0 addresses may be legit.
+		// even if the pointer is 0, it's better to pass its value on
+		// (may help in tracking down memory corruption)
+		*target = *(void**)addr_of_target;
+		return INFO_OK;
 	}
 	// .. CALL [r32]                  => FF 00-3F(!14/15)
 	if(len >= 2 && c[-2] == 0xFF && c[-1] < 0x40 && c[-1] != 0x14 && c[-1] != 0x15)
diff --git a/source/lib/sysdep/sysdep.h b/source/lib/sysdep/sysdep.h
index 107dd4bd2b..8bbe6c086b 100644
--- a/source/lib/sysdep/sysdep.h
+++ b/source/lib/sysdep/sysdep.h
@@ -110,7 +110,7 @@ extern void* alloca(size_t size);
 #  define FP_INFINITE  (FP_NAN | FP_NORMAL)
 #  define FP_ZERO      IA32_FP_ZERO
 #  define FP_SUBNORMAL (FP_NORMAL | FP_ZERO)
-#  define fpclassify ia32_fpclassify
+#  define fpclassify(x) ( (sizeof(x) == sizeof(float))? ia32_fpclassifyf(x) : ia32_fpclassify(x) )
 // .. portable C emulation
 # else
    extern float rintf(float f);