diff --git a/arch/Config.in.arm b/arch/Config.in.arm
index db7b8f2cb4..67ff384b7d 100644
--- a/arch/Config.in.arm
+++ b/arch/Config.in.arm
@@ -377,12 +377,18 @@ config BR2_ARM_INSTRUCTIONS_ARM
 config BR2_ARM_INSTRUCTIONS_THUMB
 	bool "Thumb"
 	depends on BR2_ARM_CPU_HAS_THUMB
+	# Thumb-1 and VFP are not compatible
+	depends on BR2_ARM_SOFT_FLOAT
 	help
 	  This option instructions the compiler to generate Thumb
 	  instructions, which allows to mix 16 bits instructions and
 	  32 bits instructions. This generally provides a much smaller
 	  compiled binary size.
 
+comment "Thumb1 is not compatible with VFP"
+	depends on BR2_ARM_CPU_HAS_THUMB
+	depends on !BR2_ARM_SOFT_FLOAT
+
 config BR2_ARM_INSTRUCTIONS_THUMB2
 	bool "Thumb2"
 	depends on BR2_ARM_CPU_HAS_THUMB2